Tennis giant John Isner to retire after 2023 United States Open
August 25, 2023
John Isner (Emmett Hume, Wikimedia Commons)
According to Alec Gearty of the New York Post on Thursday, American tennis giant John Isner of Greensboro, North Carolina will be planning on retiring from professional tennis at the age of 38 following the 2023 United States Open. At 6’10”, Isner is known as being one of the tallest tennis players in the history of the sport.
Most players are known for the number of championships that they won or are defined by their performance in a final. That is not the case for Isner. His most memorable match of his career was a first round match that took place at Wimbledon in 2010. In a match that lasted three days, Isner defeated Nicolas Mahut of France, 6-4, 3-6, 6-7, 7-6, 70-68. That is no misprint. The final set in the match lasted 138 games. It would be the longest match in tennis history and it was not even remotely close.
Remarkably, Isner also played the fourth longest tennis match of all-time. In the semifinals of Wimbledon in 2018, Kevin Anderson of South Africa (who recently returned to tennis after announcing his initial retirement), defeated Isner 7-6, 6-7, 6-7, 6-4, 26-24 on July 13, 2018.
One reason why Isner’s matches were so long is because he was a fantastic server, and a lousy returner. Isner has the most aces all-time with 14, 411. Ivo Karlovic of Zagreb, Croatia, who is also a giant at 6’11”, is second on the list with 13, 728 aces.
Isner’s 2018 Wimbledon semifinal result was the best of his career. He also won 16 ATP titles, of which 15 came at the 250 level. His greatest success came at the Atlanta Open, which Isner won six times, and the Hall of Fame Open in Newport, Rhode Island, which he won four times.
Isner has won once at the ATP Masters 1000 level. That came at the Miami Masters in 2018, where he beat Alexander Zverev of Germany, 6-7, 6-4, 6-4.
 Fill In The Form Below To Receive Our Tennis News Straight To Your Email For FREE!
January 8, 2026
Belinda Bencic and Coco Gauff playing strong at 2026 United Cup
We now know two semifinalists at the 2026 United Cup in Australia In the two quarterfinal matchups in Perth on Wednesday, the United States beat Greece 2-1 and Switzerland beat Argentina 2-1 What Read MoreJanuary 8, 2026
Opinion: No surprise that Cowboys fired defensive coordinator Matt Eberflus
The Dallas Cowboys have fired defensive coordinator Matt Eberflus of Toledo, Ohio The news of the firing is zero surprise because the Cowboys gave up 511 points this past season That was the most Read MoreJanuary 8, 2026
Tell Us What You Think Below