By Joel Colon

Former three division world champion Miguel Cotto (38-4, 31KOs) is putting in hard work at the Top Rank Gym in Las Vegas. Cotto, training with Hall of Fame coach Freddie Roach, will challenge WBC middleweight champion Sergio Martinez (51-2-2, 28KOs) in the main event of an HBO Pay-Per-View event on June 7th at New York's Madison Square Garden. Cotto, who won titles at 140, 147 and 154 - will attempt to become the first boxer from Puerto Rico to win four world titles in four weight divisions.