WBC middleweight champion Julio Cesar Chavez Jr. and former welterweight beltholder Antonio Margarito train together in Tijuana, Mexico. Both Chavez and Margarito are promoted by Top Rank. Chavez is training for the first defense of his title, scheduled for September 17 in Mexico against Ronald Hearns. Margarito will challenge WBA junior middleweight champion Miguel Cotto in a rematch scheduled to take place on December 3rd in New York's Madison Square Garden. Photos by Knucklehead Boxing.