London Olympics | Michael Phelps

Michael Phelps leaves the podium with his 17th career Olympic gold medal after winning the men’s 100m butterfly. (Robert Gauthier / Los Angeles Times)

Aug. 3, 2012 7:18 PM PT

Michael Phelps won his 17th career Olympic gold medal with a victory in the 100-meter butterfly.

Michael Phelps of the United States celebrates winning the men’s 100m butterfly. (Paul Gilham / Getty Images)

Michael Phelps won the men’s 100m butterfly. It was his 17th career gold medal. (Robert Gauthier / Los Angeles Times)

Michael Phelps spouts water after winning the men’s 100m butterfly. He was next to last at the turn before rallying to win. (Robert Gauthier / Los Angeles Times)