US Open 2025: Gauff beats Sonmez 6-3, 6-4; Andreeva advances in opener
Synopsis
Coco Gauff's 2025 US Open isn't just another title defence — it's a shot at history. A run to the title could make her the first woman since Aryna Sabalenka to hold the No. 1 ranking in both singles and doubles, a feat that underscores just how high the stakes are at Flushing Meadows this fortnight.
Key Takeaways
Coco Gauff defeated Zeynep Sonmez 6-3, 6-4 in the US Open 2025 first round on 2 September .
A title win could see Gauff reach world No.
1 in singles — her previous career high was No.
Gauff already holds a No.
1 doubles ranking (August 2022); the singles top spot would make her the first woman since Aryna Sabalenka to achieve both.
Gauff next faces either Paula Badosa or Daria Kasatkina in the second round.
Mirra Andreeva beat Janice Tjen 6-2, 6-2 , advancing for the fourth straight year with a Grand Slam first-round record now at 14-1 .
Andreeva, 19 , has never gone past the third round at the US Open and next plays Eva Lys (world No.
Coco Gauff, the No. 4 seed, opened her 2025 US Open campaign with a commanding 6-3, 6-4 victory over Zeynep Sonmez at Flushing Meadows on 2 September, advancing to the second round while keeping alive her bid to reach the world No. 1 singles ranking for the first time.
Gauff Dominates on Serve, Holds Off Sonmez Fightback
The 22-year-old American, competing in her eighth US Open main draw, was sharp from the first game — posting two aces and a service winner before breaking Sonmez for a 4-2 lead and closing out the opening set in a tidy 32 minutes.
The second set was more contested. Sonmez, ranked world No. 53, charged the net to disrupt Gauff's rhythm and rallied from an early break deficit to force three break points. Gauff saved all three, won a 16-point game to hold, then broke immediately to move ahead 4-3 — a lead she did not surrender.
A Title Run With Historic Stakes
Gauff enters this year's Open in strong form, having reached the semifinals at Wimbledon and Toronto and claiming the title in Cincinnati. Notably, the last time she won Cincinnati — in 2023 — she went on to lift the US Open trophy for her first Grand Slam title. She added a second Slam crown at Roland Garros 2025.
A deep run here carries additional significance: a tournament victory could see Gauff finish as the world No. 1 in singles. Her previous career high was No. 2, reached in June 2024. She already holds the distinction of having reached No. 1 in doubles in August 2022. If she achieves the singles top spot, she would become the first woman to hold No. 1 in both disciplines since current singles No. 1 Aryna Sabalenka, who topped the doubles rankings in February 2021 before reaching No. 1 in singles in September 2023.
Gauff's Next Opponent: Badosa or Kasatkina
Gauff's second-round match is a marquee fixture against either Paula Badosa — the former world No. 2 and 2024 US Open quarterfinalist — or Daria Kasatkina, the former world No. 8 and 2022 French Open semifinalist.
Andreeva Rolls Into Round Two
Mirra Andreeva, the No. 5 seed, made an emphatic start to her Flushing Meadows campaign, defeating world No. 36 Janice Tjen 6-2, 6-2 to reach the second round for the fourth consecutive year. The 19-year-old improved her Grand Slam first-round record to 14-1.
Andreeva has reached the second week at every other Grand Slam but has never advanced past the third round at the US Open — a ceiling she will be looking to break this fortnight. Her next opponent is world No. 98 Eva Lys.
Point of View
But the real story is the ranking arithmetic running alongside her draw. The pressure of chasing a historic No. 1 — while defending a Grand Slam title — is a test of nerve as much as tennis. Andreeva's clinical demolition of Tjen, meanwhile, signals that the 19-year-old is maturing fast; the question is whether Flushing Meadows, the one Slam that has resisted her, finally yields. Two contrasting storylines, both worth watching deep into the second week.
NationPress
2 Sept 2026
Frequently Asked Questions
What was Coco Gauff's result in the 2025 US Open first round?
Coco Gauff defeated Zeynep Sonmez 6-3, 6-4 on 2 September to advance to the second round of the 2025 US Open. The match saw Gauff dominate on serve and save all three break points she faced in the second set.
How could Gauff reach world No. 1 in singles at the US Open?
A title win at the 2025 US Open would see Gauff finish the tournament as the world No. 1 in singles — her previous career high was No. 2, reached in June 2024. She already holds a No. 1 doubles ranking from August 2022.
Who does Coco Gauff play in the second round of the US Open?
Gauff's second-round opponent will be either Paula Badosa, the former world No. 2 and 2024 US Open quarterfinalist, or Daria Kasatkina, the former world No. 8 and 2022 French Open semifinalist.
How did Mirra Andreeva perform in her US Open 2025 opener?
Mirra Andreeva, the No. 5 seed, beat world No. 36 Janice Tjen 6-2, 6-2 to reach the second round for the fourth consecutive year. The 19-year-old improved her Grand Slam first-round record to 14-1.
What is Mirra Andreeva's US Open record and who does she play next?
Andreeva has never progressed past the third round at the US Open, despite reaching the second week at every other Grand Slam. She next faces world No. 98 Eva Lys in the second round.
