By Chris LaBate

Ricardo Mayorga left nothing in the tank after he finished insulting WBA 154-pound champion Miguel Cotto. Mayorga has promised to retire Cotto on March 12 at the MGM Grand in Las Vegas. He claims to have been studying all of Cotto's fights and feels the Puerto Rican star is now a shot fighter. Mayorga pledged to send Cotto into retirement by providing him with a similar beating to the one received by Antonio Margarito last November from Manny Pacquiao.

He took aim at Cotto for making his mother suffer with the beatings against Antonio Margarito, Joshua Clottey and Manny Pacquiao. Mayorga claims the beatings will finally end in Las Vegas when he sends Cotto packing within four rounds. 

"I'm going to make you think about retirement like Margarito should, after Pacquiao took care of him. I'm going to do the same to you and make you think twice about stepping back in that ring. Don't let your mom and your family suffer anymore by allowing yourself to continue to take beatings in the ring. Stop making them suffer," Mayorga said.

"I'm going to knock him out and prove to everyone in Nicaragua. First time that I'm fighting someone who is as small as a kid. But the pay-per-view and watch the retirement party for Miguel. I'm going to convince him that he should retire."