Four division world champion Juan Manuel Marquez is packing on the muscle and getting ripped for his fight with WBO welterweight champion Timothy Bradley on October 12th at the Thomas & Mack Center in Las Vegas. For his last fight, Marquez beefed up the muscle under conditioning coach Angel "Memo" Heredia - and used the extra mass to score a sixth round knockout of Manny Pacquiao. Bradley makes his second defense of the title he captured from Pacquiao in June 2012.