1: ( CNN ) It was always going to take an extraordinary performance from a very talented swimmer to beat Michael Phelps at his favorite event in an Olympic final . 2: When the South African chased down Phelps in the final 50 meters of the race to snatch a dramatic fingertip victory by 0.05 seconds he created one of the defining moments of the 2012 London Olympics . 3: South African swimmer stunned Michael Phelps at 2012 London Olympics .
1: a very talented swimmer 2: the South African 3: South African swimmer