Guillermo Coria

As a junior, Coria reached a ranking of world No. 2 in singles and world No. 5 in doubles.

Coria won the Orange Bowl 16s in 1997 and reached the finals of Orange Bowl 18s in 1998, where he was defeated by future world No. 1 Roger Federer. Coria won the boys' singles title at the 1999 French Open without dropping a single set, beating his friend and fellow Argentine, David Nalbandian in straight sets in the final. One month later, at the 1999 Wimbledon Championships, in singles as the third seed, Coria reached semifinals without dropping a set, where he was defeated by top seed Kristian Pless in straight sets. In doubles of the same tournament, however, as first seeds, Coria and Nalbandian teamed up to win the boys' doubles title by beating Todor Enev and Jarkko Nieminen.

Coria tested positive for nandrolone in April 2001 after a match in Barcelona against Michel Kratochvil. Coria was initially banned from tennis for two years, starting in August 2001, and was fined $98,565. Coria claimed that the only supplement that he was taking was a multivitamin made by a New Jersey supplements company. His family employed a private lab to test the multivitamin, which was found to be contaminated with steroids. In December 2001, the ATP refused to acquit Coria but reduced his ban from two years to seven months, which meant that he would be free to continue with his tennis career in March 2002. Coria sued the New Jersey supplements company for more than $10 million in lost prize money and endorsements and settled after the third day of the trial for an undisclosed amount.[8]

As a result of the seven months during which Coria was banned from playing tennis, his world ranking dropped from No. 32 to No. 97. 2002 was, therefore, a rebuilding year for Coria, and he finished 2002 ranked at world No. 45.[9]

Coria signaled his arrival as a world-class clay-court player in 2003 by reaching the finals in Buenos Aires, where he lost a tight best-of-three-sets match to Carlos Moyá, and at the Monte Carlo Masters, where he lost in two straight sets to Juan Carlos Ferrero. Coria went on to win his first Masters Series title at Hamburg by defeating Agustín Calleri in the final in three straight sets.

At the French Open, Coria defeated Andre Agassi in four sets in the quarterfinals, before suffering an upset loss to Martin Verkerk and his booming serves in the semifinals. In July, Coria was increasingly establishing himself as the new king of clay by winning three clay-court tournaments in three weeks, the Mercedes Cup in Stuttgart, the Generali Open in Kitzbühel and the Orange Prokom Open in Sopot. He won these three tournaments without dropping a set, dishing out five bagels and eight breadsticks in the process. He finished the year ranked No. 5 in the world.

In 2004, Coria won the clay-court tournament in Buenos Aires and reached his first Masters final on hard court at the NASDAQ-100 Open, where he faced Andy Roddick. From the first set onwards, Coria was visibly hurt by pains in his back that later turned out to be kidney stones. Coria still won the first set 7–6, but Roddick won the next two sets 6–3, 6–1, before Coria was forced to retire during the first game of the fourth set.

Three weeks later, Coria defeated Rainer Schüttler in three straight sets in the final of the Monte Carlo Masters to win his second Masters Series title. Coria had now won five consecutive clay-court tournaments which include two consecutive Masters Series titles and had gone 26 consecutive matches unbeaten on clay. On 3 May 2004, Coria reached a career-high ranking of world No. 3. In attempting to defend his title at the Hamburg Masters, Coria increased his clay-court winning streak to 31 matches by reaching the final, where he lost to world No. 1, Roger Federer, in four sets.

At the French Open, Coria only dropped one set en route to the final, defeating Nikolay Davydenko, Juan Mónaco, Mario Ančić and Nicolas Escudé, before beating former world No. 1, Carlos Moyá, in the quarterfinals and British serve-and-volleyer, Tim Henman, in the semifinals; but he was unexpectedly defeated by unseeded compatriot Gastón Gaudio in an unprecedented all-Argentine final, 6–0, 6–3, 4–6, 1–6, 6–8. Coria had won the first two sets with ease and was in control of the third set at 4–4 and 40–0 up on serve, before Gaudio broke Coria's serve and went on to take the third set. Coria then succumbed to leg cramps for the rest of the match and was barely able to move at times, with many of his serves in the fourth set not even reaching the net. Despite this, Coria still got the advantage at several stages of the fifth set, leading by a break of serve on four separate occasions, including twice serving for the championship at 5–4 and 6–5. He had two championship points at 6–5 but he narrowly missed the line with attempted winners on both points, making him the only male player in the Open Era to lose a Grand Slam singles final after having held a championship point, until Roger Federer did so too at the 2019 Wimbledon Championships. Many fans and pundits agree that Coria was never the same player after the loss.

Coria reached finals on three different surfaces (all except carpet) in 2004. He surprised some people by reaching the first grass-court final of his career at 's-Hertogenbosch, losing the final to Michaël Llodra. This was only two weeks after the devastation of losing the French Open final. Coria then went on to defeat Wesley Moodie in a five-set match in the first round of Wimbledon, which took nearly three days to complete after the start of the match, as a result of rain and poor scheduling. Coria lost in four sets in the second round to Florian Mayer and got a bad injury to his right shoulder during the match. As a result, Coria dropped out for the remainder of the season and in August, Coria had surgery on his right shoulder. He returned to the ATP Tour in November for the Masters Cup, where he performed poorly.

Coria appeared in five finals after the 2004 French Open defeat and lost four of them, with three of them against the rising king of clay, Rafael Nadal. The most famous one is the Rome Masters final loss that lasted almost 5 hours and 20 minutes. It is agreed by many that it is one of the greatest matches played on clay, if not the greatest of all. Their head-to-head record was deadlocked at 1–1 prior to the match, with Nadal winning their most recent meeting at the Monte-Carlo Masters final weeks ago in four sets. Nadal took the first set 6–4 after being down a break and Coria went on to take the second 6–3. During the third set, Coria fought back from 1–5 to 3–5, where the game progressed to one of the most exciting deuces in tennis that lasted 15 minutes, featuring a variety of tactics and plays in long breathtaking rallies, although eventually Nadal pulled through and went on to take the third set 6–3. Coria took the fourth set 6–4 and led 3–0 in the fifth set with two breaks of serve and had a game point in the fourth game before Nadal broke back twice to lead 4–3 on serve in the fifth set. Eventually, the match went into tiebreak at the five-hour mark, soon after Coria had saved a championship point for Nadal in the 12th game of the fifth set. During the tiebreak, Coria fought back from a 1–5 deficit and saved another two Nadal championship points when 4–6 down in the tiebreak to level at 6–6. However, Nadal then won the next two points to win the fifth set tiebreak 8–6. As a result, Nadal had won his second consecutive Masters final of the year against Coria.

The only final Coria won in 2005 was on 31 July, when he won in Umag, Croatia, defeating Carlos Moyá in the final. Afterward, Coria joked that the small tournament was considered a fifth Grand Slam in his family because his wife Carla hails from Croatia. Coria had a surprisingly consistent 2005 season, where he was one of only three players to reach the fourth round or better at every Grand Slam, the others being Roger Federer and David Nalbandian.

Despite having a consistent season in 2005, during his tournament victory in Umag he started to suffer from the service yips, a psychological condition that renders a tennis player unable to hit the ball at the correct moment when serving. Initially, it was not very noticeable, but became more apparent at the US Open, during which Coria served a combined total of 34 double faults in his fourth-round win over Nicolás Massú and his quarterfinal loss to unseeded Robby Ginepri. Against Ginepri, having already saved five match points, Coria was serving to take the match into a fifth-set tiebreaker, when two consecutive double faults from deuce gave Ginepri the win.

As the 2005 season drew to a close, Coria's form started to dip alarmingly as a result of the high number of double faults he was serving in an increasing number of his matches. Coria lost nine of his last eleven matches of 2005. Some pundits have also speculated that his three losses in finals to the emerging Nadal may have hit his confidence worse than the loss to Gaudio.[10]

Between 2003 and 2005, Coria compiled a record of 90–13 (87.38%) which includes a 31-match win streak on clay.

Coria's service yips got increasingly worse in 2006, although he still reached the third round of the Australian Open, and even managed a victory over Novak Djokovic at the Miami Masters without serving any double faults.

At the Monte-Carlo Masters, Coria came back from 1–6, 1–5 down to defeat Paul-Henri Mathieu, despite serving 20 double faults in the match. Coria then defeated Nicolas Kiefer, despite serving 22 double faults, but he was then easily beaten by Rafael Nadal in the quarterfinals. After Monte Carlo, Coria wins generally became fewer and further between, although he did manage a semifinal in Amersfoort in July 2006.

Coria withdrew from the French Open and Wimbledon as he attempted to sort out marital problems, problems with his game, and an elbow injury. In August 2006, he hired Horacio de la Peña as his tennis coach. At the US Open, Coria retired in his first-round match against Ryan Sweeting after just five games. It would be 17 months before Coria played a match on the ATP Tour again.

Coria made his return to a Challenger in Belo Horizonte, Brazil on 22 October 2007. He lost the first set 3–6 to fellow Argentine Juan Pablo Brzezicki and subsequently retired with a back injury. He had been leading in the first set 3–1.

Coria finally returned to the main tour in the Movistar Open in Chile on 28 January 2008. He showed positive signs of recovering his form but was still defeated in the first round by Pablo Cuevas, 4–6, 6–3, 3–6.

In February, in his second ATP Tour appearance of the year, Coria defeated Italian qualifier Francesco Aldi, 6–4, 7–5. It was his first ATP victory in 19 months.

As a result of Andy Roddick's withdrawal from the French Open due to a back injury, Coria made his first Grand Slam appearance since the 2006 US Open, taking the place of the American. He faced Tommy Robredo, the three-time quarterfinalist and 12th seed, in the first round. Coria was defeated in four sets, 7–5, 4–6, 1–6, 4–6, but Coria's performance led to some optimism, even from Coria himself, who was close to forcing a fifth set.

Coria never recovered from the service yips that damaged his game and kept his ranking hundreds of places below his once consistent top-ten position. On 28 April 2009, he announced his retirement from professional tennis, saying that he "didn’t feel like competing anymore."[11]