Ivan Calderón (born approx. 1981) is a boxer from Puerto Rico. Calderón attended the 2000 Olympics in Australia, but he lost there on the first tournament round. Calderón is a native of Guaynabo.

He also lost to Brian Viloria during his amateur boxing career.

After turning professional, Calderón has managed to raise the eyebrows of many Puerto Rican boxing fans, and he has been frequently showcased on ESPN's Friday Night Fights show.

On May 3, 2003, Calderón became a world champion for the first time, beating Eduardo Marquez by a technical decision in nine rounds at Las Vegas, as part of the De La Hoya-Campas undercard, to win the WBO's world Strawweight title. 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 IBF world champion Edgar Cardenas , in Guaynabo.

Before that fight, Calderón obtained his high school credit diploma. Cesar Rey , director of the Puerto Rican school department, hoped Calderón could become an example to Puerto Rican youth.

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 .

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.

Calderón as a professional is undefeated, with 21 wins and 4 of those by knockout.

See also

• List of famous Puerto Ricans

Further reading