Aug. 13, 2008: London 2012 might be over -- and with it, Michael Phelps' Olympic career -- but on this day four years ago Michael Phelps was just getting started, medal record-wise. In beating the world mark in the 200-meter butterfly, the American claimed his 10th gold medal -- the most of any athlete, ever. But he didn't stay too long on the medal stand; he had more work to do -- that day, that week and then a few years later.