By Miguel Angel Cebreros, notifight.com

Trainer Gabriel Sarmiento will be responsible for the preparation of WBC middleweight world champion Sergio "Maravilla" Martinez (51-2-2, 28KOs), who is scheduled to defend his title on June 7 against Puerto Rico's Miguel Cotto (38-4, 31KOs) at Madison Square Garden in New York City.

Cotto will attempt to become the first Puerto Rican boxer to win four world titles in four weight divisions.

Martinez has been inactive since last April's victory over Martin Murray. He suffered a bad left knee injury that required surgery. In a recent interview, Martinez admitted that he hasn't been able to run in a year and has to take extra special care of the knee. Even with that factor, Sarmiento is confident his boxer will knock Cotto out.

"We realize the issue of the injury. But we are confident that we'll arrive in the proper condition to fight. Regardless, even if we're at 75% - it's more than enough to knock Cotto out. Anyway, we know that we will be much better than that," Sarmiento said.