Ivan Calderon (boxer)

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

After turning professional, Calderon 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, Calderon 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.

Calderon as a professional is undefeated, with 15 wins and 3 of those by knockout.