RELENTLESS: Cotto vs Mayorga is an upcoming boxing super welterweight fight for the WBA Super Welterweight championship. The bout will be held on March 12, 2011, at MGM Grand Garden Arena, in Las Vegas, Nevada, United States.

Cotto, a four time world champion, won his 154-pound belt by stopping Yuri Foreman in the ninth round at Yankee Stadium in June 2010. Following the bout, the Puerto Rican pugilist underwent shoulder surgery and took the rest of 2010 off. On the other hand, Mayorga is coming from a ninth round KO win against Michael Walker in December 2010; this was the first time he fought in 27 months, after being knocked out by Shane Mosley in the twelfth round of their September 2008 match.