The Olympic swimming great upstaged some of golf's finest players Friday by sinking an astonishing 153-foot putt during the second round of team play at the Dunhill Links Championship.
The putt came after Phelps drove the front edge of the green on the par-4 sixth hole at Kingsbarn. He then stepped up with his putter for his second shot, stroked the ball and watched as it rolled and rolled downhill and into the cup.
It took about 17 seconds for the ball to land in the hole, or slightly quicker than it takes Phelps to swim 50 yards.
Phelps, playing the team event with a 16 handicap, received a stroke on the hole and signed for an aggregate '1' on his scorecard.
"That was the longest putt I've ever holed," said the winner of 18 Olympic gold medals. "It was pretty incredible, watching it dive in was a pretty cool feeling. So to be able to have a net hole-in-one was pretty special.
"Even without that, this trip would have been very special, just having the opportunity to come over here and play among some of these players has been absolutely incredible."
Phelps recorded a net eagle 'two' at the next hole with pro partner Paul Casey. They moved to 9-under overall.
Thailand's Thongchai Jaidee and his amateur partner, Hugh Courtney Jr., lead the team format at 21 under.