Rau’shee Warren, 25, could have turned pro after the Beijing Games. But he’s still on an Olympic mission. In 2008, Warren and his teammates turned in the worst performance in U.S. Olympic history: coaches and boxers bickered, and the U.S. returned home with only a single bronze. Warren, the 2007 flyweight world champ, lost in the first round. In London, Warren, who grew up street scrapping in a rough Cincinnati neighborhood, will become the first U.S. boxer to fight in three Olympics. (In Athens, he lost in the first round too.) He has two children: Rau’shee, 4, and Rue’shee, 1. “I’m trying to get on my George Foreman,” he says.