SAN JUAN, PUERTO RICO- WBO junior flyweight champion, Ivan “Iron Boy” Calderon will defen hist title in a rematch next September 12 against dangerous Rodel Mayol in the card “Undefeated Champions” presented by PR Best Boxing Promotions in the Coliseo de Puerto Rico Jose Miguel Agrelot, that will bring also the first defense of the WBO junior lightweight champion Roman “Rocky” Martinez.

Unbeaten Calderon (32-0-1 6KO’s), from Guaynabo, Puerto Rico, will face Mayol (25-3-1, 19 KO’s) in a rematch of their June 13 fight when after an accidental headbutt and a hurt on the head of Calderon the bout was stopped and ended in a technical draw after six rounds.

“I made many mistakes in the other fight when I wants to impress the fans and the TV, but this time I’m going to do my job, my boxing that in hit and not to hit me”, said Calderon in a press conference today.

Mayol, who came to Puerto Rico with his manager Michael Konez, said that “I am training very hard for this fight because I want the title and I know that I will win the title on September 12”.

Meanwhile, Martinez (22-0-1, 13 KO’s) will defende his WBO 130 pounds title versus an opponent that will be announced in the next days.