Floyd Mayweather, Jr. has announced his retirement from boxing. Mayweather wrestled Big Show at WrestleMania XXIV. He was scheduled to have a big rematch with Oscar De La Hoya but that is now off. "I have decided to permanently retire from boxing. This decision was not an easy one for me to make, as boxing is all I have done since I was a child. However, these past few years have been extremely difficult for me to find the desire and joy to continue in the sport." ESPN has more on this at ESPN.com.