Iván Calderón (boxer)

Iván Calderón Marrero (born January 27, 1975) is a Puerto Rican former professional boxer who competed from 2001 to 2012. He is a two-weight world champion, having held the WBO mini flyweight title from 2003 to 2007 (making eleven successful defenses and being recognized as super champion by the organization), and the WBO, Ring magazine, and lineal light flyweight titles from 2007 to 2010 (making six successful defenses).[1] Additionally, his August 2010 bout against Giovani Segura was named fight of the year by Ring magazine. As an amateur Calderón represented Puerto Rico in international competitions, including the 2000 Olympics.

Iván Calderón
Statistics
Real nameIván Calderón Marrero
Nickname(s)
  • Iron Boy
  • El Niño de Hierro
Weight(s)
Height5 ft (152 cm)
Reach63 in (160 cm)
Born (1975-01-27) January 27, 1975
Guaynabo, Puerto Rico
StanceSouthpaw
Boxing record
Total fights39
Wins35
Wins by KO6
Losses3
Draws1
Medal record
Men’s amateur boxing
Representing  Puerto Rico
Pan American Games
Bronze medal – third place 1999 Winnipeg Light flyweight
Central American and Caribbean Games
Bronze medal – third place 1998 Maracaibo Light flyweight
In this Spanish name, the first or paternal surname is Calderón and the second or maternal family name is Marrero.

Personal life

Iván Calderón was born in the municipality of Guaynabo, Puerto Rico and currently resides in a sector called "Las Americas" in Bayamón.[2] Iván had a troubling childhood surrounded by violence and problems, which according to him has helped him develop more patience which has helped him in his personal life.[3] Calderón attended middle school in José Nevárez Landrón School, located in Toa Baja, Puerto Rico.[4] His first wife was Wilma Laguna, with whom he has two children, Wilvani and Iván junior.[5] In an interview with El Nuevo Día he noted that he engaged Laguna on August 29, 1997, following a quinceañero and the couple married on February 5, 1999.[2] According to him the couple had some disagreements when they met, based on some attitudes he presented, he also notes that he felt she was arrogant at first.[5] However, on one day he decided to propose to her and after four months of establishing a relationship the couple moved in together.[5] Calderón expressed that he is "too much of a house man" and claims that as a result of a rule established by his former wife any kind of non-familiar activity is prohibited on Sundays.[6] In January 2009, it was made public that Calderón and Laguna had established a divorce process.

He is married to A. Maldonado Garcia Dennisse; a prepared and educated woman. Maldonado has his Bachelors of Business Administration from the University Ana G. Mendez. Currently has a daughter named Diannelys E. Calderon.

Calderón spends the money that he earns boxing on properties and he is associated with a company dedicated to satellite vehicle tracking.[7] He is employed by the City of Guaynabo's Department of Sports and Recreation and has been involved in several youth-oriented charities in his native Puerto Rico, including lecturing in island schools and co-sponsoring a massive gift-giving effort in the town of Loíza's Three Kings festival in early 2006. As a result of his charitable efforts with children that live in poor communities he was awarded a special award at the World Boxing Organization's 2007 annual convention.[8]

On November 16, 2011, Federal agents in Puerto Rico seized more than $4 million worth cocaine from a house owned by Calderon. Drug Enforcement Administration spokeswoman Laila Rico said 225 kilograms (nearly 500 pounds) of cocaine were found when agents raided the house in the coastal town of Humacao. Calderon denied knowledge of the narcotics and was never formally charged with an offence.[9]

Amateur career

In 1993, Calderón defeated Miguel Cotto in the light flyweight division, when both boxers were in the early stages of amateur experience.[10] Following this, both athletes developed a close friendship.[11] Calderón lost to Brian Viloria once during his amateur boxing career, but defeated him three times before turning professional. In addition, Calderon competed as an international amateur in several tournaments, including the following:

  • 1999 3rd place as a Light Flyweight at Pan-American Games in Winnipeg, Canada. Results were:
    • Defeated Wilfrido Valez (Colombia) points
    • Defeated Mendeo Winston (Dominican Republic) points
    • Lost to Maikro Romero (Cuba) points
  • 2000 represented Puerto Rico as a light flyweight at the 2000 Sydney Olympic Games. Result was:
    • Lost to Masara La Paene (Indonesia) points

Professional career

After turning professional, Calderón was frequently showcased on ESPN's Friday Night Fights show. On July 1, 2001, Calderón defeated José Manuel Ramírez by unanimous decision. During this fight, he suffered an open wound over his right eyebrow, which required surgery.[12] On May 3, 2003, Calderón became a world champion for the first time, defeating Eduardo Marquez by a technical decision in nine rounds at Las Vegas, as part of the de la Hoya-Campas undercard, to win the World Boxing Organization's world strawweight title.[11] He had dropped Marquez twice before the end of the fight. Calderón retained his title by a 12-round decision in his first defense, on September 5, over Lorenzo Trejo of Mexico, at Caguas, Puerto Rico. In his second defense, held at Bayamón, he defeated former world champion Alex Sanchez by a unanimous twelve-round decision. On March 20, 2004, he retained the championship with an eleventh-round knockout win over former International Boxing Federation world champion Edgar Cardenas, in Guaynabo. Before that fight, Calderón obtained his high school credit diploma.[13]

On July 31, 2004, as part of the Morales-Hernandez undercard in Las Vegas, he retained his title once again, with a twelve-round decision win over former world champion Roberto Leyva.[14] On November 23 of that year, he made his fifth defense, defeating Nicaraguan Carlos Fajardo by a twelve-round unanimous decision. As part of the Barrera-Morales III undercard. His fight with Fajardo was shown live on HBO's Pay per view. On April 30, of 2005, he retained the title with an eighth-round knockout victory over Noel Tunacao, a member of the Tunacao boxing family of the Philippines.[15] On September 25, he retained his title for the seventh time, with a twelve-round unanimous decision over Mexico's Gerardo Verde, at Atlantic City, New Jersey.[16]

On December 10, 2004, Calderón retained the title again, this time with a twelve-round unanimous decision over former world champion Daniel Reyes.[17] Calderón began 2006 by defending his title successfully on February 18, with a twelve-round unanimous decision over Isaac Bustos in Las Vegas.[18] He would defend his title successfully twice in 2006 after his fight with Isaac Bustos. On April 29 against Miguel Tellez winning the fight by technical knock out thus gaining his sixth knock out victory.[19] He finished his boxing year on October 21 by defeating José Luis Varela of Venezuela by unanimous decision.[20] Following this fight the World Boxing Organization recognized him as a WBO Super Champion for reaching ten successful title defenses.[21] On his first fight of 2007 that took place on March 28 in Baranquilla, Colombia Calderón defeated Ronald Barrera by split decision.[22] Following his fight against Barrera Calderón announced that he was interested in changing weight and challenge one of the champions in the light flyweight division thus finishing his minimum weight run after twelve successful defenses of the division's title.[23]

During this timeframe, Freddie Roach selected Calderón as a sparring partner for Oscar De La Hoya. The reason for this was that the trainer was seeking a fast adversary. On November 16, 2008, Roach rememorated the event in his blog for The Ring, stating that "Calderon slapped Oscar around like it was unbelievable."[24] The trainer also noted that he asked De La Hoya to pursue the offense, but the boxer's attempts were unsuccessful. In response, Calderón expressed that he participated in "three or four rounds" of sparring, during which he "gave him problems" and "made him uncomfortable", while De La Hoya "tried to hit" but seemed "out of timing".[25] Similarly, Calderón competed against Shane Mosley in a four-round sparring match.[26] The session was in preparation, serving as training for the first of a series of fights against Hugo Cázares. During the actual contest, Mosley had problems landing punches due to his adversary's speed.[26] While Calderón recognized that his opponent's weight made the practice feel like a complete workout. Subsequently, Mosley expressed that "Iván uses the angles very well and sparring against someone that moves so much is fun".[26] Calderón noted that competing against a heavier boxer helped him adjust to the pressure that could be presented by Cázares.

Light flyweight division

On August 25, 2007, Calderón defeated Hugo Cázares by split decision to become the WBO and Lineal Light Flyweight Champion.[27] Calderón entered the ring accompanied by a display of fireworks, before a crowd that featured several media personalities, including Oscar De La Hoya.[28] The size difference between both pugilists was evident since the moment that they stood next to each other prior to the beginning of the fight.[28] Early in the fight Calderón's tactic consisted of connecting fast consecutive combinations while avoiding Cázares' punches. With this strategy he managed to stun Cazares with uppercuts and straight punches.[28] During the fight the crowd displayed support for Calderón, at one point chanting "Olé" when his adversary's punches missed. In the third round Cázares displayed a more fluid offensive, but in the fifth he presented a strategy that consisted of only throwing power punches which seemed to benefit Calderón.[28] In the seventh round Ivan's offensive pace slowed which benefited Hugo who improved on the offensive aspect. In the eighth round Cázares connected several hard punches which led to Calderón to rely on holds to slow his offense, in this round Cázares scored a knockdown.[28] In the ninth he was in a defensive stance, and during the last rounds he continued this pattern and only connected solidly in the tenth round while Cázares missed several of the punches he threw.[28] At the conclusion of the fight the judges awarded scores of 116-111 for Cázares and 115-112 twice for Calderón.[28] With this victory he became the eleventh Puerto Rican boxer to win multiple world championships and unified this championship with the minimum division's one until he vacated it following the announcement that he was going to continue in the light flyweight division.[28] The Ring also recognized Calderón as their champion, dethroning Cázares.

Calderón was successful on his first light flyweight title defense when he defeated Juan Esquer in a card that took place on December 1, 2007, in New Mexico.[29] During the course of the fight Esquer was more active offensively.[30] During the first four rounds of the match Calderón used his boxing skills to avoid being hit by the punches thrown by Esquer.[31] From the fifth round onwards Calderón proceeded to exchange combinations of punches with Esquer, eventually gaining control of the fight's tempo.[32] The fight lasted twelve rounds and Iván won the fight by unanimous decision with the judges awarding scores of 116–112, 118-110 and 115–113.[33] Calderón's second defense in the light flyweight division took place on April 4, 2008, where he defeated Nelson Dieppa by unanimous decision.[34] The three judges awarded him identical scores of 120–108.[34]

Following a protest, the World Boxing Organization named Cázares the mandatory challenger for the championship. The event was scheduled for August 30, 2008. Calderón entered the ring dressed as a matador in reference to his boxing style, which provoked "Olé" chants from the public.[35] In the early stages, the fight's pattern was similar to the first meeting. Calderón relied on counter punching while boxing to avoid Cázares' offensive.[36] Late in the first round, the challenger fell following a combination, but the referee declared that it was an accidental slip. In the following rounds, Cázares tried pressuring in the offensive, but Calderón continued boxing and held his opponent if approached.[36] The challenger was momentarily stunned by an uppercut in the final seconds of the third episode.[36] Cázares' technique in the next two rounds consisted of throwing punches to the body, while his offensive to the head was being stopped by his opponent's forearms.[36] In the sixth round, Calderón focused on his defense, slowing the pace of his offensive. In the seventh episode, an accidental head clash opened a laceration in Calderón's forehead.[36] Who was examined by the ringside doctor, after expressing that he was feeling disoriented.[36] The physician recommended stopping the fight. Due to the circumstances, the outcome was decided by the judges' score cards, which favored Calderón 67-66 and 68-65 twice.[36] Following the event, he announced his intention to participate in a unification match against one of the other light flyweight champions.[37] Due to the nature of this injury, the Puerto Rico Boxing Commission prohibited Calderón participation in any card within 120 days.[38] Two weeks after the contest, the wound was reopened and he underwent plastic surgery to prevent reinjury.[12] On September 23, 2008, Peter Rivera announced that Calderón was expected to return between January and February 2009. Rivera noted that the fight would be against one of the other light flyweight champions, most likely César Canchila, citing that although both Ulises Solís and Edgar Sosa were approached, with both claiming to be available, neither one actually pursued serious negotiations.[39] He subsequently stated that negotiations had been extended to Solís' representatives, but that those of Sosa still declined, citing that "[He] is a fighter that has always refused to fight with Iván. His managers don't want to sacrifice him and prefer to keep him in Mexico competing in soft fights."[40] In the meanwhile, he received a homage as part of the Dominican Parade in San Juan, serving as Padrino Internacional (lit. "International Godfather") along Juan Manuel López.[41]

On June 13, 2009, Calderón defended the championship against Rodel Mayol.[42] During the first stage, both pugilists fought in the middle of the ring, while he focused on attacking the body while the challenger employed jabs.[42] During the second and third rounds, Mayol pressured the offensive, managing to land a moderate number of punches. In the fourth round, Calderón began pursuing the offensive, while avoiding Mayol's punches.[42] This continued in the following chapter, but a head clash opened another laceration on his forehead, he continued the contest, but was more aggressive from this point onwards.[42] Calderón's corner tried to stop the bleeding, but the referee suspended the contest during the sixth round after these attempts proven unsuccessful. The fight was declared a technical draw, with both fighters receiving a 58-56 card while the third judge scored in 57-57.[42] An immediate rematch was scheduled three months later. Calderón began this contest by effectively avoiding Mayol's constant attack, while throwing limited punches.[43] This pattern continued during the following three rounds. In the fifth, Mayol connected his best punch of the fight, winning the round.[43] To retaliate, Calderón became more aggressive, throwing more combinations.[43] The seventh round began with exchanges from both boxers, but a head clash opens another laceration that stops the fight. The contest was declared a technical decision, with the judges offering scores of 68-65 twice for Calderón and 68-65 for Mayol.[43]

Retirement

On October 29, 2012, almost a month after his last fight, Calderón officially announced his retirement from professional boxing. The announcement was made during the inauguration of the Félix Pagán Pintor Gymnasium in Guaynabo, Puerto Rico. Calderón will now work as administrator of the gymnasium.[44]

Professional boxing record
39 fights 35 wins 3 losses
By knockout 6 3
By decision 29 0
Draws 1
No. Result Record Opponent Type Round, time Date Location Notes
39 Loss 35–3–1 Moisés Fuentes TKO 5 (12), 1:22 6 Oct 2012 Coliseo Rubén Rodríguez, Bayamón, Puerto Rico For WBO mini flyweight title
38 Win 35–2–1 Felipe Rivas SD 12 29 Oct 2011 Mario Morales Coliseum, Guaynabo, Puerto Rico Won vacant WBO Latino mini flyweight title
37 Loss 34–2–1 Giovani Segura KO 3 (12), 1:39 2 Apr 2011 Auditorio del Estado, Mexicali, Mexico For WBO and The Ring light flyweight titles
36 Loss 34–1–1 Giovani Segura KO 8 (12), 1:34 28 Aug 2010 Mario Morales Coliseum, Guaynabo, Puerto Rico For WBA (Unified) light flyweight title;
Lost WBO and The Ring light flyweight titles
35 Win 34–0–1 Jesus Iribe UD 12 12 Jun 2010 Madison Square Garden, New York City, New York, U.S. Retained WBO and The Ring light flyweight titles
34 Win 33–0–1 Rodel Mayol TD 7 (12), 3:00 12 Sep 2009 José Miguel Agrelot Coliseum, Hato Rey, Puerto Rico Retained WBO and The Ring light flyweight titles;
Split TD after Calderón cut from accidental head clash
33 Draw 32–0–1 Rodel Mayol TD 6 (12), 1:50 13 Jun 2009 Madison Square Garden, New York City, New York, U.S. Retained WBO and The Ring light flyweight titles;
Split TD after Calderón cut from accidental head clash
32 Win 32–0 Hugo Cázares TD 7 (12), 1:58 30 Aug 2008 Coliseo Rubén Rodríguez, Bayamón, Puerto Rico Retained WBO and The Ring light flyweight titles;
Unanimous TD after Calderón cut from accidental head clash
31 Win 31–0 Nelson Dieppa UD 12 5 Apr 2008 Coliseo Roberto Clemente, San Juan, Puerto Rico Retained WBO and The Ring light flyweight titles
30 Win 30–0 Juan Esquer UD 12 1 Dec 2007 Tingley Coliseum, Albuquerque, New Mexico, U.S. Retained WBO and The Ring light flyweight titles
29 Win 29–0 Hugo Cázares SD 12 25 Aug 2007 Coliseo Rubén Rodríguez, Bayamón, Puerto Rico Won WBO and The Ring light flyweight titles
28 Win 28–0 Ronald Barrera SD 12 28 Apr 2007 Coliseo Universidad del Norte, Barranquilla, Colombia Retained WBO mini flyweight title
27 Win 27–0 José Luis Varela UD 12 21 Oct 2006 Coliseo Elias Chegwin, Barranquilla, Colombia Retained WBO mini flyweight title
26 Win 26–0 Miguel Tellez TKO 9 (12), 1:04 29 Apr 2006 Mario Morales Coliseum, Guaynabo, Puerto Rico Retained WBO mini flyweight title
25 Win 25–0 Isaac Bustos UD 12 18 Feb 2006 The Aladdin, Paradise, Nevada, U.S. Retained WBO mini flyweight title
24 Win 24–0 Daniel Reyes UD 12 10 Dec 2005 Coliseo Roberto Clemente, San Juan, Puerto Rico Retained WBO mini flyweight title
23 Win 23–0 Gerardo Verde UD 12 25 Jun 2005 Boardwalk Hall, Atlantic City, New Jersey, U.S. Retained WBO mini flyweight title
22 Win 22–0 Noel Tunacao TKO 8 (12), 2:25 30 Apr 2005 José Miguel Agrelot Coliseum, Hato Rey, Puerto Rico Retained WBO mini flyweight title
21 Win 21–0 Carlos Fajardo UD 12 27 Nov 2004 MGM Grand Garden Arena, Paradise, Nevada, U.S. Retained WBO mini flyweight title
20 Win 20–0 Roberto Carlos Leyva UD 12 31 Jul 2004 MGM Grand Garden Arena, Paradise, Nevada, U.S. Retained WBO mini flyweight title
19 Win 19–0 Edgar Cardenas KO 11 (12), 1:33 20 Mar 2004 Mario Morales Coliseum, Guaynabo, Puerto Rico
18 Win 18–0 Alex Sánchez UD 12 6 Dec 2003 Coliseo Rubén Rodríguez, Bayamón, Puerto Rico Retained WBO mini flyweight title
17 Win 17–0 Lorenzo Trejo UD 12 5 Sep 2003 Coliseo Héctor Solá Bezares, Caguas, Puerto Rico Retained WBO mini flyweight title
16 Win 16–0 Eduardo Ray Marquez TD 9 (12), 0:43 3 May 2003 Mandalay Bay Resort and Casino, Paradise, Nevada, U.S. Won WBO mini flyweight title;
15 Win 15–0 Juan Carlos Perez UD 10 7 Mar 2003 Coliseo Pedrin Zorrilla, San Juan, Puerto Rico
14 Win 14–0 Valentin Leon UD 10 20 Dec 2002 Coliseo Marron Aponte, Aibonito, Puerto Rico
13 Win 13–0 Lee Marvin Sandoval UD 12 22 Nov 2002 Coliseo Marron Aponte, Aibonito, Puerto Rico Won vacant WBO–NABO mini flyweight title
12 Win 12–0 Roberto Gomez UD 10 6 Sep 2002 Community Center, Victoria, Texas, U.S.
11 Win 11–0 Alejandro Moreno UD 10 30 Jul 2002 Lucky Star Casino, Concho, Oklahoma, U.S.
10 Win 10–0 Carlos Lopez UD 4 3 May 2002 The Orleans Hotel and Casino, Paradise, Nevada, U.S.
9 Win 9–0 Jorge Romero TKO 4 (8) 1 Mar 2002 Coliseo Guillermo Angulo, Carolina, Puerto Rico
8 Win 8–0 Mike Thomas UD 8 11 Jan 2002 Coliseo Héctor Solá Bezares, Caguas, Puerto Rico
7 Win 7–0 Jorge Romero UD 8 28 Oct 2001 Ponce, Puerto Rico
6 Win 6–0 Alberto Rossel UD 8 26 Aug 2001 El Hotel & Casino, San Juan, Puerto Rico
5 Win 5–0 Jose Manuel Ramirez UD 6 1 Jul 2001 Pier 10 Arena, San Juan, Puerto Rico
4 Win 4–0 Iran Ethridge KO 1 (4), 1:37 20 May 2001 San Juan, Puerto Rico
3 Win 3–0 Benjamin Escobia UD 4 29 Apr 2001 Club Amazura, Jamaica, New York, U.S.
2 Win 2–0 Arturo Velazquez UD 4 25 Mar 2001 Greyhound Park, Phoenix, Arizona, U.S.
1 Win 1–0 Sergio Diaz TKO 1 (4), 2:43 17 Feb 2001 MGM Grand Garden Arena, Paradise, Nevada, U.S.

See also

References
  1. "The Ring Ratings". The Ring. 2008-12-22. Archived from the original on 2008-12-08. Retrieved 2008-02-26.
  2. Hiram Alberto Torraca (2007-08-31). Feliz y en paz (in Spanish). Puerto Rico: El Nuevo Día. "Un 29 de agosto hace diez años, luego de un quinceañero, le dije a mi suegra 'me la llevo'. Y aquí estamos juntos", dijo Calderón en una visita de El Nuevo Día a su residencia en la Urbanización Las Americas, en Bayamón
  3. Hiram Alberto Torraca (2007-08-31). Feliz y en paz (in Spanish). Puerto Rico: El Nuevo Día. Calderón, quien nunca ha ocultado que tuvo una niñez difícil y rodeada de problemas y violencia, aceptó que esa experiencia la ha llevado a su hogar, pero para evitar que eso ocurra.
  4. The Associated Press (2008-01-28). Honran a Iván Calderón. Puerto Rico: El Nuevo Día.
  5. Hiram Alberto Torraca (2007-08-31). Feliz y en paz (in Spanish). Puerto Rico: El Nuevo Día. Lo que pasa es que yo no le caía bien porque como a mí me gustaba siempre estar combinao, ella pensaba que yo era un negrito guillao. Y como yo me pasaba tirándole flores pero ella ni me miraba, yo también pensaba que ella era una orgullosa. Todo cambío cuando un día le dije que no tenia babila para darme un beso y lo hizo. Ahí comenzó todo. Luego de como cuatro meses de relación nos fuimos a vivir juntos", agregó Calderón ante la mirada de su esposa, sus hijos Wilvani e Iván Jr. y su suegra Luz Mercedes Quiñones.
  6. Hiram Alberto Torraca (2007-08-31). Feliz y en paz (in Spanish). Puerto Rico: El Nuevo Día. "Los domingos son para la familia. Ese día es para estar con mi esposa y los nenes", dijo Calderón quien labora en el gimnasio Wilfredo Gómez de Guaynabo. "Ella (su esposa) puso ese término. Los domingos cero actividades", agregó Calderón.
  7. Hiram Alberto Torraca (2007-08-31). Feliz y en paz (in Spanish). Puerto Rico: El Nuevo Día. Calderón quien ha invertido su dinero en cinco propiedades y como socio de una compañia que se dedica al monitoreo por satélite de vehículos de motor, también tiene timpo para hacer de todo en el hogar.
  8. "Calderón y de la Hoya reciben galardones" (in Spanish). Televicentro. Associated Press. 2007-11-07. Archived from the original on 2007-11-02. Retrieved 2007-12-03.
  9. "Agents seize $4M worth of cocaine at boxer Calderon's house". Tsn.ca. 2011-11-16. Retrieved 2014-05-08.
  10. Dan Rafael (2008-08-29). "The best boxer fight fans might not know". ESPN. Retrieved 2009-01-22.
  11. Fiona Manning (2003-05-09). "Ivan Calderon: Puerto Rico's New World Champion". La Prensa San Diego. Retrieved 2007-12-20.
  12. Raymond Pérez (2008-09-14). "Deportes". Su herida ya suma 43 puntos (in Spanish). El Nuevo Día.
  13. Carlos González (2004-01-28). "Iván Calderón repitió en la cima" (in Spanish). Zonai. Archived from the original on 2007-10-21. Retrieved 2007-12-03.
  14. Luis Escobar (2004-07-31). "Morales Unifies Titles Defeats Hernandez". The Boxing Times. Archived from the original on 2007-08-11. Retrieved 2007-09-14.
  15. "Calderón noqueó a Tuñacao en el octavo". Univision. 2005-05-01. Archived from the original on 2013-02-05. Retrieved 2007-09-14.
  16. John Gregg (2005-06-25). "Mayweather Grinds Down Gatti In Six". The Boxing Times. Archived from the original on 2007-08-22. Retrieved 2007-09-14.
  17. "Iván Calderón retuvo su cetro sin problemas" (in Spanish). El Vocero Hispano. 2005-12-16. Archived from the original on 2008-03-01. Retrieved 2007-09-14.
  18. Luis Escobar (2006-02-18). "Margarito Crushes Gomez In One". The Boxing Times. Archived from the original on 2007-08-08. Retrieved 2007-09-14.
  19. Rey Colón. "Deportes". Supercampeón Iván Calderón (in Spanish). El Vocero.
  20. The Associated Press (2006-10-21). "De principio a fin". ESPN Deportes. Retrieved 2007-09-14.
  21. "El Campeón Tiene Su Corona" (in Spanish). World Bpxing Association. Archived from the original on October 11, 2007. Retrieved 2008-04-28.
  22. The Associated Press (2007-05-02). "Calderón defendió con éxito cetro mínimo". Univision. Archived from the original on 2011-06-06. Retrieved 2007-09-14.
  23. José Ayala Gordián (2007-12-03). "Nunca me tuvo en problemas". Primera Hora. Archived from the original on April 2, 2015. Retrieved 2007-12-03.
  24. Freddie Roach (2008-11-16). "Freddie Roach blog". The Ring. Archived from the original on 2009-01-23. Retrieved 2009-01-27.
  25. Mark Vester (2008-11-24). "Ivan Calderon Talks about De La Hoya Sparring Session". BoxingScene.com. Retrieved 2009-01-27.
  26. Carlos González (2007-04-17). "Iván y Mosley, guanteo como un aprendizaje". Primera Hora (in Spanish). Archived from the original on October 10, 2007. Retrieved 2009-01-27.
  27. "Iván Calderón - Lineal Jr. Flyweight Champion". The Cyber Boxing Zone Encyclopedia.
  28. José A. Sánchez Fournier (2007-08-26). Calderón vs Cázares: Doble Correa para el boricua (in Spanish). El Nuevo Día. pp. 118–119.
  29. Staff (2007-12-01). Amplia desición para Iván (in Spanish). Puerto Rico: El Nuevo Día. p. 157. Iván 'Iron Boy' Calderón salió airoso anoche de su primera defensa de de su primera defensa de su título de las 108 libras de la OMB, al vencer por desición unánime al mexicano Juan 'Panterita' Esquer en la cartelera efectuada en Albuquerque, Nuevo México.
  30. Staff (2007-12-01). Amplia desición para Iván (in Spanish). Puerto Rico: El Nuevo Día. p. 157. Esquer llevó la ofensiva toda la noche, lanzando múltiples 'barrecampos'.
  31. Staff (2007-12-01). Amplia desición para Iván (in Spanish). Puerto Rico: El Nuevo Día. p. 157. Calderón, en esos asaltos, apenas contra-restaba la desorganizada ofensiva de Esquer.
  32. Staff (2007-12-01). Amplia desición para Iván (in Spanish). Puerto Rico: El Nuevo Día. p. 157. Pero a partir del quinto asalto, Calderón dejó de retroceder y se detuvo a intercambiar golpes con Esquer. Con combinaciones, Calderón empezó a llegarle a Esquer en los restantes asaltos del combate para tener control de la pelea.
  33. Staff (2007-12-01). Amplia desición para Iván (in Spanish). Puerto Rico: El Nuevo Día. p. 157. Las votaciones de los jueces fueron de 116-112, 118-110 y 115-113 para que Calderón mantuviera su invicto en 30 combates.
  34. "No hay quién lo pare" (in Spanish). ESPN Deportes. 2008-04-06. Retrieved 2008-04-28.
  35. Luis Torres (2008-09-02). "Ivan Calderón prevails over Cazares in remach!". FightFan.com. Archived from the original on 2010-02-06. Retrieved 2009-02-05.
  36. Raúl Álzaga Sánchez-Bretón (2008-08-31). "Calderón retiene luego de cabezazo accidental". Primera Hora (in Spanish). Archived from the original on 2016-03-04. Retrieved 2008-09-01.
  37. Raúl Álzaga Sánchez-Bretón (2008-09-01). "Iván desea unificar". Primera Hora (in Spanish). Archived from the original on April 2, 2015. Retrieved 2008-09-01.
  38. Carlos González (2008-09-02). "Vacaciones forzadas para el "Iron Boy"". Primera Hora (in Spanish). Archived from the original on April 2, 2015. Retrieved 2008-09-02.
  39. Rey Colón (2008-09-23). "Para febrero el posible regreso al ring de Iván" (in Spanish). El Vocero. Archived from the original on September 24, 2008. Retrieved 2008-09-23.
  40. Omar Marrero (2008-09-27). "Deportes". Iván Calderón unificará en el 2009 (in Spanish). El Nuevo Día.
  41. Mariana Cobián (2008-10-13). "Con sabor a mangú y a mofongo". Primera Hora (in Spanish). Archived from the original on December 11, 2008. Retrieved 2009-01-02.
  42. Carlos González (2009-06-13). "Empate Iván Calderón y Rodel Mayol". Primera Hora (in Spanish). Retrieved 2009-11-29.
  43. Raúl Álzaga (2009-09-12). "Iván Calderón derrota a Rodel Mayol por decisión mayoritaria (mira el round por round)". Primera Hora (in Spanish). Retrieved 2009-11-29.
  44. Ribas, Fernando (October 29, 2012). "Ivan Calderón se retira del boxeo". El Nuevo Día.
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