Darren McFadden took part in Oakland's voluntary workouts on Tuesday, a good sign after an injury ended his 2011 season early. "He's one of our most explosive players on offense," coach Dennis Allen said. "He's a dangerous weapon. We're looking forward to finding different ways of using him and kind of exploiting his talents." McFadden was in the midst of a breakout season before a Lisfranc injury cost him nine games.