Golf

Penalty strokes are incurred in certain situations and are counted towards a player's score as if there were extra swing(s) at the ball. Either one or two strokes are added for most rule infractions or for taking relief from various situations, with the "general penalty" defined as two-strokes, and disqualification for severe or repeated rule breaches. Examples include:

• A lost ball or a ball hit out of bounds (OB) results in a penalty of one stroke and distance (Rule 18.2).
• With the exception of certain circumstances, a one-stroke penalty is assessed if a player causes their ball to move (Rule 9.4).
• A one-stroke penalty is assessed if a player elects to take relief when their ball comes to rest within a red or yellow penalty area (Rule 17), or from an unplayable lie (Rule 19).
• A two-stroke penalty is incurred for making a stroke at the wrong ball (Rule 6.3c).
• A two-stroke penalty is incurred for hitting a fellow player's ball if both balls lay on the green prior to the stroke (Rule 11.1a).
• Disqualification can result from cheating, signing for a lower score, or failing to adhere to one or more rules that lead to improper play.[28]

Stance refers to how the golfer positions themselves in order to play a stroke; it is fundamentally important in being able to play a stroke effectively. The stance adopted is determined by what stroke is being played. All stances involve a slight crouch. This allows for a more efficient striking posture whilst also isometrically preloading the muscles of the legs and core; this allows the stroke to be played more dynamically and with a greater level of overall control. When adopting their stance golfers start with the non-dominant side of the body facing the target (for a right-hander, the target is to their left). Setting the stance in regard to the position of the ball, and placing the clubhead behind the ball, is known as being at address; when in this position the player's body and the centerline of the club face are positioned parallel to the desired line of travel, with the feet either perpendicular to that line or slightly splayed outward. The feet are commonly shoulder-width apart for middle irons and putters, narrower for short irons and wider for long irons and woods. The ball is typically positioned more to the "front" of the player's stance (closer to the leading foot) for lower-lofted clubs, with the usual ball position for a drive being just behind the arch of the leading foot. The ball is placed further "back" in the player's stance (toward the trailing foot) as the loft of the club to be used increases. Most iron shots and putts are made with the ball roughly centered in the stance, while a few mid- and short-iron shots are made with the ball slightly behind the centre of the stance to ensure consistent contact between the ball and clubface, so the ball is on its way before the club continues down into the turf.

The golfer chooses a golf club, grip, and stroke appropriate to the distance:

• The "drive" or "full swing" is used on the teeing ground and fairway, typically with a wood or long iron, to produce the maximum distance capable with the club. In the extreme, the windup can end with the shaft of the club parallel to the ground above the player's shoulders.
• The "approach" or "3/4 swing" is used in medium- and long-distance situations where an exact distance and good accuracy is preferable to maximum possible distance, such as to place the ball on the green or "lay up" in front of a hazard. The windup or "backswing" of such a shot typically ends up with the shaft of the club pointing straight upwards or slightly towards the player.
• The "chip" or "half-swing" is used for relatively short-distance shots near the green, with high-lofted irons and wedges. The goal of the chip is to land the ball safely on the green, allowing it to roll out towards the hole. It can also be used from other places to accurately position the ball into a more advantageous lie. The backswing typically ends with the head of the club between hip and head height.
• The "putt" is used in short-distance shots on or near the green, typically made with the eponymous "putter", although similar strokes can be made with medium to high-numbered irons to carry a short distance in the air and then roll (a "bump and run"). The backswing and follow-through of the putt are both abbreviated compared to other strokes, with the head of the club rarely rising above the knee. The goal of the putt is usually to put the ball in the hole, although a long-distance putt may be called a "lag" and is made with the primary intention of simply closing distance to the hole or otherwise placing the ball advantageously.

Having chosen a club and stroke to produce the desired distance, the player addresses the ball by taking their stance to the side of it and (except when the ball lies in a hazard) grounding the club behind the ball. The golfer then takes their backswing, rotating the club, their arms and their upper body away from the ball, and then begins their swing, bringing the clubhead back down and around to hit the ball. A proper golf swing is a complex combination of motions, and slight variations in posture or positioning can make a great deal of difference in how well the ball is hit and how straight it travels. The general goal of a player making a full swing is to propel the clubhead as fast as possible while maintaining a single "plane" of motion of the club and clubhead, to send the clubhead into the ball along the desired path of travel and with the clubhead also pointing that direction.

Accuracy and consistency are typically stressed over pure distance. A player with a straight drive that travels only 220 yards (200 m) will nevertheless be able to accurately place the ball into a favourable lie on the fairway, and can make up for the lesser distance of any given club by simply using "more club" (a lower loft) on their tee shot or on subsequent fairway and approach shots. However, a golfer with a drive that may go 280 yards (260 m) but often does not fly straight will be less able to position their ball advantageously; the ball may "hook", "pull", "draw", "fade", "push" or "slice" off the intended line and land out of bounds or in the rough or hazards, and thus the player will require many more strokes to hole out.

A golf stroke uses the muscles of the core (especially erector spinae muscles and latissimus dorsi muscle when turning), hamstring, shoulder, and wrist. Stronger muscles in the wrist can prevent them from being twisted during swings, whilst stronger shoulders increase the turning force. Weak wrists can also transmit the force to elbows and even neck and lead to injury. (When a muscle contracts, it pulls equally from both ends and, to have movement at only one end of the muscle, other muscles must come into play to stabilize the bone to which the other end of the muscle is attached.) Golf is a unilateral exercise that can break body balances, requiring exercises to keep the balance in muscles.[30][31]

Putting is considered to be the most important component of the game of golf. As the game of golf has evolved, there have been many different putting techniques and grips that have been devised to give golfers the best chance to make putts. When the game originated, golfers would putt with their dominant hand on the bottom of the grip and their weak hand on top of the grip. This grip and putting style is known as "conventional". There are many variations of conventional including overlap, where the golfer overlaps the off hand index finger onto off the dominant pinky; interlock, where the offhand index finger interlocks with the dominant pinky and ring finger; double or triple overlap and so on.[32] Recently, "cross handed" putting has become a popular trend amongst professional golfers and amateurs. Cross handed putting is the idea that the dominant hand is on top of the grip where the weak hand is on the bottom. This grip restricts the motion in your dominant hand and eliminates the possibility of wrist breakdowns through the putting stroke.[33]

Other notable putting styles include "the claw", a style that has the grip directly in between the thumb and index finger of the dominant hand while the palm faces the target.[34] The weak hand placed normally on the putter. Anchored putting, a style that requires a longer putter shaft that can be anchored into the player's stomach or below the chin; the idea is to stabilize one end of the putter thus creating a more consistent pendulum stroke. This style has been banned on professional circuits since 2016.[35]

A par-3 hole in Phoenician Golf Club, Scottsdale, Arizona

A marker stone indicating that this hole is a par-5 hole

A hole is classified by its par, which gives an indication of the number of strokes a skilled golfer may be expected to need to complete play of the hole.[17] The primary factor for classifying the par of a relatively straight, hazard-free hole is the distance from the tee to the green, and calculates the number of strokes a skilled golfer is expected to require to reach the green with an additional allowance of 2 putts. As such, the minimum par of any hole is 3; one stroke for the tee shot and two putts. Par 3, 4 and 5 holes are commonplace on golf courses; far more rarely, courses may feature par-6 and even par-7 holes.

For men, a typical par-3 hole is less than 250 yards (230 m) in length, with a par-4 hole ranging between 251–450 yards (230–411 m), and a par-5 hole being longer than 450 yards (410 m); for women these boundaries are lower, and for professionals they are much increased. The rare par-6s can stretch well over 650 yards (590 m). These distances are based on the typical scratch golfer's drive distance of between 240 and 280 yards (220 and 260 m). Although length is the primary factor in calculating par, other factors are taken into account; however the number of strokes a scratch golfer should take to make the green remains foremost. Factors affecting the calculation include altitude, gradient of the land from the tee to green, and forced "lay-ups" due to dog-legs (sharp bends) or obstacles (e.g. bunkers, water hazards).[36]

Getting the ball onto the green in two strokes less than par, and hence meeting the par calculation criteria, is called making "green in regulation" or GIR.[37] Missing a GIR does not necessarily mean a golfer will not make par, but it does make doing so more difficult as it reduces the number of putts available; conversely, making a GIR does not guarantee a par, as the player might require three or more putts to "hole out". Professional golfers typically make between 60% and 70% of greens in regulation.[38]

Eighteen-hole courses typically total to an overall par score of 70 to 72 for a complete round; with most holes having a par of 4, and a smaller number of par-3 and par-5 holes. Additionally, courses may be classified according to their play difficulty, which may be used to calculate a golfer's handicap.[39] The two primary difficulty ratings in the U.S. are the Course Rating, which is the expected score for a zero-handicap "scratch golfer", and the Slope Rating, which is a measure of how much worse a "bogey golfer" (handicap around 20) would be expected to play than a "scratch golfer" relative to their handicap.

Golf-themed decorative nest box “Birdies Welcome”

The goal is to play as few strokes per round as possible. A golfer's number of strokes in a hole, course, or tournament is compared to its respective par score, and is then reported either as the number that the golfer was "under-" or "over-par", or if it was "equal to par". A hole in one (or an "ace") occurs when a golfer sinks their ball into the cup with their first stroke from the tee. Common scores for a hole also have specific terms.[17]

In a typical professional tournament or among "scratch" amateur players, "birdie-bogey" play is common; a player will "lose" a stroke by bogeying a hole, then "gain" one by scoring a birdie. Eagles are uncommon but not rare; however, only 18 players have scored an albatross in a men's major championship. One of the rarest feats in golf is the condor, which has never occurred in a professional tournament. Only five condors have been verified to have ever occurred, although none of the courses involved were professionally accredited.[40]

There are two basic forms of golf play, match play and stroke play. Stroke play is more popular.

Two players (or two teams) play each hole as a separate contest against each other in what is called match play. The party with the lower score wins that hole, or if the scores of both players or teams are equal the hole is "halved" (or tied). The game is won by the party that wins more holes than the other. In the case that one team or player has taken a lead that cannot be overcome in the number of holes remaining to be played, the match is deemed to be won by the party in the lead, and the remainder of the holes are not played. For example, if one party already has a lead of six holes, and only five holes remain to be played on the course, the match is over and the winning party is deemed to have won "6 & 5". At any given point, if the lead is equal to the number of holes remaining, the party leading the match is said to be "dormie", and the match is continued until the party increases the lead by one hole or ties any of the remaining holes, thereby winning the match, or until the match ends in a tie with the lead player's opponent winning all remaining holes. When the game is tied after the predetermined number of holes have been played, it may be continued until one side takes a one-hole lead.[17]

The score achieved for each and every hole of the round or tournament is added to produce the total score, and the player with the lowest score wins in stroke play. Stroke play is the game most commonly played by professional golfers. If there is a tie after the regulation number of holes in a professional tournament, a playoff takes place between all tied players. Playoffs either are sudden death or employ a pre-determined number of holes, anywhere from three to a full 18. In sudden death, a player who scores lower on a hole than all of their opponents wins the match. If at least two players remain tied after such a playoff using a pre-determined number of holes, then play continues in sudden death format, where the first player to win a hole wins the tournament.

There are many variations in scoring and playing formats in the game of golf, some officially defined in the Rules of Golf. Variations include the popular Stableford scoring system, and various team formats. Some common and popular examples are listed below.

There are also variations on the usual starting procedure where everyone begins from the first tee and plays all holes in order, through to the eighteenth. In large field tournaments, especially on professional tours, a two tee start is commonplace, where the field will be split between starting on the first tee and the tenth tee (sometimes the eighth or eleventh depending on proximity to the clubhouse). Shotgun starts are mainly used for amateur tournament or society play. In this variant, each of the groups playing starts their game on a different hole, allowing for all players to start and end their round at roughly the same time. For example, a group starting on hole 5 will play through to the 18th hole and continue with hole 1, ending their round on hole 4.

A bogey or par competition is a scoring format sometimes seen in informal tournaments. Its scoring is similar to match play, except each player compares their hole score to the hole's par rating instead of the score of another player. The player "wins" the hole if they score a birdie or better, they "lose" the hole if they score a bogey or worse, and they "halve" the hole by scoring par. By recording only this simple win–loss–halve score on the sheet, a player can shrug off a very poorly-played hole with a simple "-" mark and move on. As used in competitions, the player or pair with the best win–loss differential wins the competition.

The Stableford system is a simplification of stroke play that awards players points based on their score relative to the hole's par; the score for a hole is calculated by taking the par score, adding 2, then subtracting the player's hole score, making the result zero if negative. Alternately stated, a double bogey or worse is zero points, a bogey is worth one point, par is two, a birdie three, an eagle four, and so on. The advantages of this system over stroke play are a more natural "higher is better" scoring, the ability to compare Stableford scores between plays on courses with different total par scores (scoring an "even" in stroke play will always give a Stableford score of 36), discouraging the tendency to abandon the entire game after playing a particularly bad hole (a novice playing by strict rules may score as high as an 8 or 10 on a single difficult hole; their Stableford score for the hole would be zero, which puts them only two points behind par no matter how badly they played), and the ability to simply pick up one's ball once it is impossible to score any points for the hole, which speeds play.

The USGA and R&A sanction a "Modified Stableford" system for scratch players, which makes par worth zero, a birdie worth 2, eagle 5 and double-eagle 8, while a bogey is a penalty of −1 and a double-bogey or worse −3. As with the original system, the highest score wins the game, and terrible scores on one or two holes will not ruin a player's overall score, but this system rewards "bogey-birdie" play more than the original, encouraging golfers to try to make riskier birdie putt or eagle chipshots instead of simply parring each hole.[17]

Junín Golf Club, in Junín, Argentina

• Foursomes (also known as Alternate Shot): defined in Rule 22, this is played in pairs, in which each team has only one ball and players alternate playing it. For example, if players "A" and "B" form a team, "A" tees off on the first hole, "B" will play the second shot, "A" the third, and so on until the hole is finished. On the second hole, "B" will tee off (regardless who played the last putt on the first hole), then "A" plays the second shot, and so on. Foursomes can be played as match play or stroke play.[41]
  • Greensomes (also known as Scotch Foursomes): also called modified alternate shot, this is played in pairs; both players tee off, and then pick the best shot. The player who did not shoot the best first shot plays the second shot. The play then alternates as in a foursome.[42] A variant of greensome is sometimes played where the opposing team chooses which of their opponent's tee shots the opponents should use.
• Four-ball: defined in Rules 23, this is also played in pairs, but every each plays their own ball and for each team, the lower score on each hole counts. Four-ball can be played as match play or stroke play.[43]

• Scramble: also known as ambrose or best-shot; each player in a team tees off on each hole, and the players decide which shot was best. Every player then plays their second shot from within a clublength of where the best shot has come to rest (and no closer to the hole), and the procedure is repeated until the hole is finished. This system is very common at informal tournaments such as for charity, as it speeds play (due to the reduced number of shots taken from bad lies), allows teams of varying sizes, and allows players of widely varying skill levels to participate without profoundly affecting team score.[44]
• Best-ball: like four-ball, each player plays the hole as normal, but the lowest score of all the players on the team counts as the team's score for the hole.[45] There are many variations on this format, which count a different number of scores on each hole.

A handicap is a numerical measure of a golfer's potential scoring ability over 18 holes. It is used to enable players of widely varying abilities to compete against one another. Better players are those with the lowest handicaps, and someone with a handicap of 0 or less is often referred to as a scratch golfer. Handicap systems vary throughout the world and use different methods to assess courses and calculate handicaps. In order to address difficulties in translating between these systems the USGA and The R&A, working with the various existing handicapping authorities, devised a new World Handicap System which was introduced globally starting in 2020.[46]

Golf courses are assessed and rated according to the average good score of a scratch golfer, taking into account a multitude of factors affecting play, such as length, obstacles, undulations, etc. A player's handicap gives an indication of the number of strokes above this course rating that the player will make over the course of an "average best" round of golf, i.e. scoring near their potential, above average.[47] Lower handicap players are generally the most consistent, so can be expected to play to this standard or better more often than higher handicappers. Some handicap systems also account for differences in scoring difficulty between low and high handicap golfer. They do this by means of assessing and rating courses according to the average good score of a "bogey golfer", a player with a handicap of around 20. This is used with the course rating to calculate a slope rating, which is used to adjust golfer's handicap to produce a playing handicap for the course and set of tees being used.[48]

Handicap systems have potential for abuse by players who may intentionally play badly to increase their handicap (sandbagging) before playing to their potential at an important event with a valuable prize. For this reason, handicaps are not used in professional golf, but they can still be calculated and used along with other criteria to determine the relative strengths of various professional players. Touring professionals, being the best of the best, have negative handicaps; they can be expected, more often than not, to score lower than the Course Rating on any course.

Below are the top 20 countries that have the most golf courses as of 2019.[53]

Indoor putting green for practice and instruction

Golf instruction involves the teaching and learning of the game of golf. Proficiency in teaching golf instruction requires not only technical and physical ability but also knowledge of the rules and etiquette of the game. In some countries, golf instruction is best performed by teachers certified by the Professional Golfers Association. Some top instructors who work with professional golfers have become quite well known in their own right. Professional golf instructors can use physical conditioning, mental visualization, classroom sessions, club fitting, driving range instruction, on-course play under real conditions, and review of videotaped swings in slow motion to teach golf to prepare the golfer for the course.

There are at least twenty professional golf tours, each run by a PGA or an independent tour organization, which is responsible for arranging events, finding sponsors, and regulating the tour. Typically a tour has "members" who are entitled to compete in most of its events, and also invites non-members to compete in some of them. Gaining membership of an elite tour is highly competitive, and most professional golfers never achieve it.

Gary Player is widely regarded as one of the greatest players in the history of golf.

Perhaps the most widely known tour is the PGA Tour, which tends to attract the strongest fields, outside the four Majors and the four World Golf Championships events. This is due mostly to the fact that most PGA Tour events have a first prize of at least 800,000 USD. The European Tour, which attracts a substantial number of top golfers from outside North America, ranks second to the PGA Tour in worldwide prestige. Some top professionals from outside North America play enough tournaments to maintain membership on both the PGA Tour and European Tour. Since 2010, both tours' money titles have been claimed by the same individual three times, with Luke Donald doing so in 2011 and Rory McIlroy in 2012 and 2014. In 2013, Henrik Stenson won the FedEx Cup points race on the PGA Tour and the European Tour money title, but did not top the PGA Tour money list (that honour going to Tiger Woods).

The other leading men's tours include the Japan Golf Tour, the Asian Tour (Asia outside Japan), the PGA Tour of Australasia, and the Sunshine Tour (based in southern Africa, primarily South Africa). The Japan, Australasian, Sunshine, PGA, and European Tours are the charter members of the trade body of the world's main tours, the International Federation of PGA Tours, founded in 1996. The Asian Tour became a full member in 1999. The Canadian Tour became an associate member of the Federation in 2000, and the Tour de las Américas (Latin America) became an associate member of the Federation in 2007. The Federation underwent a major expansion in 2009 that saw eleven new tours become full members – the Canadian Tour, Tour de las Américas, China Golf Association, the Korea Professional Golfers' Association, Professional Golf Tour of India, and the operators of all six major women's tours worldwide. In 2011, the Tour de las Américas was effectively taken over by the PGA Tour, and in 2012 was folded into the new PGA Tour Latinoamérica. Also in 2012, the Canadian Tour was renamed PGA Tour Canada after it agreed to be taken over by the PGA Tour. All men's tours that are Federation members, except the India tour, offer points in the Official World Golf Ranking (OWGR) to players who place sufficiently high in their events.

Golf is unique in having lucrative competition for older players. There are several senior tours for men aged fifty and over, arguably the best known of which is the U.S.-based PGA Tour Champions.

There are six principal tours for women, each based in a different country or continent. The most prestigious of these is the United States-based LPGA Tour. All of the principal tours offer points in the Women's World Golf Rankings for high finishers in their events.

All of the leading professional tours for under-50 players have an official developmental tour, in which the leading players at the end of the season will earn a tour card on the main tour for the following season. Examples include the Korn Ferry Tour, which feeds to the PGA Tour, and the Challenge Tour, which is the developmental tour of the European Tour. The Korn Ferry and Challenge Tours also offer OWGR points.

Lee Westwood pictured making a bunker shot at the 2008 Open

The major championships are the four most prestigious men's tournaments of the year. In chronological order they are: The Masters, the U.S. Open, The Open Championship (referred to in North America as the British Open) and the PGA Championship.[54]

The fields for these events include the top several dozen golfers from all over the world. The Masters has been played at Augusta National Golf Club in Augusta, Georgia, since its inception in 1934. It is the only major championship that is played at the same course each year.[55] The U.S. Open and PGA Championship are played at courses around the United States, while the Open Championship is played at courses around the United Kingdom.[56]

Prior to the advent of the PGA Championship and The Masters, the four Majors were the U.S. Open, the U.S. Amateur, the Open Championship, and the British Amateur.

Lorena Ochoa, a retired number one female golfer, pictured here in 2007

Women's golf does not have a globally agreed set of majors. The list of majors recognised by the dominant women's tour, the LPGA Tour in the U.S., has changed several times over the years, with the most recent changes occurring in 2001 and 2013. Like the PGA Tour, the (U.S.) LPGA[57] tour long had four majors, but now has five: the Chevron Championship (previously known by several other names, most recently the ANA Inspiration), the Women's PGA Championship (previously known as the LPGA Championship),[58] the U.S. Women's Open, the Women's British Open (which replaced the du Maurier Classic as a major in 2001) and The Evian Championship (added as the fifth major in 2013). Only the last two are also recognised as majors by the Ladies European Tour. However, the significance of this is limited, as the LPGA is far more dominant in women's golf than the PGA Tour is in mainstream men's golf. For example, the BBC has been known to use the U.S. definition of "women's majors" without qualifying it. Also, the Ladies' Golf Union, the governing body for women's golf in Great Britain and Ireland, stated on its official website that the Women's British Open was "the only Women's Major to be played outside the U.S."[59] (this was before the elevation of The Evian Championship to major status).

For many years, the Ladies European Tour tacitly acknowledged the dominance of the LPGA Tour by not scheduling any of its own events to conflict with the three LPGA majors played in the U.S., but that changed beginning in 2008, when the LET scheduled an event opposite the LPGA Championship. The second-richest women's tour, the LPGA of Japan Tour, does not recognise any of the U.S. LPGA or European majors as it has its own set of majors (historically three, since 2008 four). However, these events attract little notice outside Japan.

Senior (aged fifty and over) men's golf does not have a globally agreed set of majors. The list of senior majors on the U.S.-based PGA Tour Champions has changed over the years, but always by expansion. PGA Tour Champions now recognises five majors: the Senior PGA Championship, The Tradition, the Senior Players Championship, the United States Senior Open, and The Senior (British) Open Championship.

Of the five events, the Senior PGA is by far the oldest, having been founded in 1937. The other events all date from the 1980s, when senior golf became a commercial success as the first golf stars of the television era, such as Arnold Palmer and Gary Player, reached the relevant age. The Senior Open Championship was not recognised as a major by PGA Tour Champions until 2003. The European Senior Tour recognises only the Senior PGA and the two Senior Opens as majors. However, PGA Tour Champions is arguably more dominant in global senior golf than the U.S. LPGA is in global women's golf.

Golf was featured in the Summer Olympic Games official programme in 1900 and 1904. After a 112-year absence, golf returned for the 2016 Rio Games.[60] The International Golf Federation (IGF) is recognised by the International Olympic Committee (IOC) as the world governing body for golf.