A press conference is held in Las Vegas for Saturday's pay-per-view undercard to Floyd Mayweather Jr. vs Juan Manuel Marquez.
Chris John defends his WBA featherweight title against Rocky Juarez in a rematch of their controversial February draw. Lightweights Michael Katsidis and Vicente Escobedo collide for the WBO's interim-title. Featherweights Cornelius Lock and Orlando Cruz will open up the show.