Name: Ivan Calderon
Alias: Iron Boy / El Niño De Hierro
Birth Name: Iván Calderón Marrero
Birthplace: Guaynabo, Puerto Rico
Hometown: Guaynabo, Puerto Rico
Height: 5′ 0″ / 152cm
Reach: 63″ / 160cm
Boxing Record: click
Manager: Peter Rivera
Trainer: Jose Sanchez
Ivan Calderon is known as a great pure boxer. He was an amateur rival of Brian Viloria, beating him at the Olympic Qualifiers but losing in two Dual Meets. He also defeated Miguel Angel Cotto during his amateur career.
- 1999 3rd place as a Light Flyweight at Pan-American Games in Winnipeg, Canada. Results were:
- 2000 represented Puerto Rico as a Light Flyweight at the 2000 Sydney Olympic Games. His result was:
- Lost to Masara La Paene (Indonesia) points
- Has a record of 18-3-1 (2 KOs) in World Title fights.
- Has a record of 9-3-1 (0 KOs) against former or current world titleists.
Eduardo Ray Marquez
| WBO Minimumweight Champion
2003 May 3 – 2007 Sep
Hugo Fidel Cazares
| WBO Light Flyweight Champion
2007 Aug 25 – 2010 Aug 28