On this Sunday's 60 Minutes, Anderson Cooper has an interview with Olympic hero Michael Phelps.
During the interview, Cooper challenged Phelps to a race, with a few conditions to try and even out the playing field.
Phelps had to swim underwater, with no breathing, and could only use his legs. Cooper also got to dive in while Phelps could only push off the wall.
Plus, Phelps has not really been training since the games and is, for him, sort of out of shape.
So who won?