![John Isner of the United States returns the ball to Michael Mmoh of the United States during their second round match at the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 31 August 2023.](https://imagenes.elpais.com/resizer/v2/S5NOJ3YLOU5ZOMBS4VVSQLZO2U.jpg?auth=2725c18a928f42b33c6ccd8300f38d0413f3eb8756b434a10cc5db4188ea3eaa&width=414&height=233&smart=true)
John Isner heads to retirement after US Open last-set tiebreaker losses in singles and doubles
Isner announced the week before play began at Flushing Meadows that this Grand Slam tournament would mark his farewell
Isner announced the week before play began at Flushing Meadows that this Grand Slam tournament would mark his farewell
This year’s tournament features several players who left the tour for a significant amount of time and now are back