Steve Marcus
WBC welterweight champion Floyd Mayweather Jr. poses with breast cancer survivors and Stephanie Kirby, right, executive director of Susan G. Komen of Southern Nevada, as he makes a donation to the organization during a news conference at the MGM Grand Wednesday, April 30, 2014. Mayweather will take on WBA welterweight champion Marcos Maidana of Argentina in a WBC/WBA unification fight at the MGM Grand Garden Arena on Saturday.