Michael Phelps caps legendary Olympic career with relay gold in final race.

The United States closed the Rio Olympics swimming competition with a final dominating flourish, sweeping the medley relay events and sending Michael Phelps out on a triumphant note. The men’s medley relay followed with its own moment of glory, maintaining an all-time perfect Olympic record in the event when the U.S. has participated. Double gold medalist Ryan Murphy led off on backstroke, followed by Cody Miller on breaststroke, Phelps on butterfly and Nathan Adrian swimming the freestyle leg. After Murphy delivered a world-record breaking backstroke leg, the writing was seemingly on the wall. Phelps did his part in the third leg, pressing ahead of Great Britain and setting up Adrian to bring home the gold with an Olympic-record time of 3:27.95. It was the final competitive swim for Phelps, who leaves the stage after five Olympic Games as by far the most decorated Olympian of all-time with 23 gold medals and 28 overall. The 31-year-old Phelps furthered his legend by winning five gold and one silver at the Rio Games after coming out of retirement in 2014