By Elisinio Castillo

WBC middleweight champion Sergio Martinez (51-2-2, 28KOs) believes "size will matter" when he faces Miguel Cotto (38-4, 31KOs) on June 7th at Madison Square Garden in New York City. Cotto, who won titles at 140, 147 and 154 - will attempt to become the first Puerto Rican fighter to capture a fourth divisional belt.

"I am facing one of the best boxers out of Puerto Rico. He is one of the best in the history [of Puerto Rico] and held titles in three different weight division. Fighting Cotto motivates me to train. Beyond the issue with my [left] knee], I think I'll have the physical advantages in my favor, because I have become accustomed to fighting with opponents who are bigger and stronger than me," Martinez said.

Martinez has been out of the ring since last April's win over Martin Murray. He suffered a left knee injury, that required surgery, and in order to avoid any possibility of re-injuring the knee - Martinez is taking extra special care of himself in training camp.

"'My knee has suffered several injuries [over the years] that cause me pain. I am constantly with a bag of ice, I do massages and I use creams. I have not run in a year. The pain is just from walking. But I have to keep training hard because I do not want to lose. Everyone knows in Argentina that I'm going to give everything I have in order to win," Martinez said.