US Open Tennis

John Isner has headed off into retirement after losing in singles and doubles at the U.S. Open. The 38-year-old American was beaten in final-set tiebreakers in both matches. That included a five-set exit against Michael Mmoh in singles before a packed house at the Grandstand at Flushing Meadows. Isner leaves with the record for career aces and finished with 48 against Mmoh. Isner and Jack Sock then lost in doubles. Isner is best known for winning the longest match in tennis history — one that lasted 11 hours, 5 minutes and ended 70-68 in the fifth set against Nicolas Mahut at Wimbledon in 2010.