Maybe the most memorable part of Michael Phelps’ wonderful Olympic run was the finish of the 100m butterfly. He won the race by 0.01 seconds, so the finish was too close to call even in slow motion. SI.com has a cool frame-by-frame breakdown of the last moments of the race.

Be sure to check out the whole thing, because it’s interesting to see how Phelps’ final half-stroke actually won him the race (when, at the time, he thought it was going to lose him the race). Here’s the final shot for those that still wonder if he was the first to touch the wall. Phelps is on the left.