ATP Rankings Report – As of Sept. 15, 2025

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A rankings update during a Davis Cup week, the week after the US Open, and without any ATP-level tournaments is going to be a deeper dive to the lower levels.

The only changes in the top 50 are literally at the No. 49 and No. 50 spots.

Still, an interesting exercise.

Most of the big changes are from players winning Challengers, or failing to defend Challengers won a year ago.

Or, in some cases, giving up the chance to defend those points to play Davis Cup.

WTA Rankings Report – As of Sept. 15, 2025

For the complete, updated ATP Tour rankings for Monday, click here.

Juan Manuel Cerundolo (ARG): No. 86 ============> No. 72 (Cerundolo, who is now 23, hit a career high by winning the Guanzhou Challenger. He had two retirements (notably Dan Evans, in the third set).

Thiago Agustin Tirante (ARG): No. 116 ============> No. 94 (Tirante is just four shy of a career high reached in April 2024 after winning the Szczecin Challenger).

Hugo Gaston (FRA): No. 128 ============> No. 106 (Gaston moves a sstep closer to getting back to the top 100 after beating Stan Wawrinka in the final of the Rennes Challenger)

Alejandro Tabilo (CHI): No. 125 ============> No. 112 (Tabilo, ranked inside the top 20 as recently as July 2024 but coming back from issues including a wrist, played the Guanzhou Challenger and makes the final. Thus putting a dent in that number).

Stan Wawrinka (SUI): No. 149 ============> No. 137 (At 40, Wawrinka was vying to become the oldest-ever Challenger title winner on Sunday, but fell short agains Gaston. Only Ivo Karlovic beats him as the oldest finalist, and remains, at 38 years, seven months, the … most seasoned Challenger champion in history).

Jack Pinnington Jones (GBR): No. 240 ============> No. 177 (The 22-year-old is obviously hopping to go the same route as countryman Jacob Fearnley – from the US college system to a viable career in the pros. Pinnington Jones wins the Winston-Salem Challenger without dropping a set, and without having to face anyone ranked even in the top 300. Nice work. He was an All-American at TCU in 2024 and 2025, and the most outstanding player at the 2024 Championships. He’s skipping his final year there to become a full-time pro).

Gauthier Onclin (BEL): No. 215 ============> No. 198 (The 24-year-old made the qquarterfinals at the Guangzhou Challenger).

Pablo Llamas Ruiz (ESP): No. 284 ============> No. 222 (The 22-year-old form Spain, wno notably beat No. 88 Vit Kopriva and solid Brazilian Thiago Monteiro en route, made he final at the Szczecin Challenger).

Learner Tien (USA): No. 49 ============> No. 54 (The 19-year-old American has been quiet lately, although he did made the fourth round in Toronto and beat Shapovalov and Opelka. But he had tough draws losing in the second round in Cincinnati to Rublev and the first round at the US Open to Novak Djokovic. People had been expecting him to give the legend more of a tusle, but he went out in straight sets. But now it’s crunch time. He has a ton of Challenger results to defend even as he’s graduated to the main Tour. And the first was a Challenger title in Las Vegas this week last year. He has a title, a final and two semifinals coming up this fall).

Jacob Fearnley (GBR): No. 54 ============> No. 64 (Fearnley, who peeked into the top 50 after Roland Garros, is another player who’s graduated who has some lower-level results to defend this fall. The first – a title at the Rennes Challenger, fell off Monday and another title in Orléans falls off in two weeks. In the interim, he was called up to play Davis Cup against Poland last week despite suffering what was described as a shoulder injury in a loss to Alexander Zverev at the US Open. When he was replaced in the lineup in Poland, it was described as a rib injury. Either way, it’s not great news for his short-term ranking future).

***AMAZING trophy for Fearnley in Rennes in 2024 (Pic: ATP Challenger Tour)***

Vit Kopriva (CZE): No. 88 ============> No. 102 (Kopriva’s quarterfinal effort in Poland last week wasn’t enough to defend the points he earned by winning it a year ago. And so he drops out of the top 100 for the first time since March).

Christopher O’Connell (AUS): No. 89 ============> No. 103 (O’Connell drops out of the top 100 for the first time since Oct. 2022, when he jumped in to stay after a gradual rise. He made the semifinals in Guangzhou, retiring against Tabilo. But he won that event a year ago).