Geneva, 21 August 2025 – The stage is set for the final Grand Slam® tournament of the year, with the US Open beginning on Sunday 24 August. Rolex became Official Timekeeper of the tournament in 2018, recognizing the remarkable continuity and endeavour at the heart of the US Open – which stands as the only Grand Slam® event to have been played every year since its inception as a national amateur competition in 1881. At the USTA Billie Jean King National Tennis Center players will face one of the most formidable challenges in tennis as the drama unfolds over the course of 15 days. To lift the trophy, they must navigate its uniquely electric atmosphere, passionate crowds and varying conditions from day to night.

This year’s US Open marks half a century since the first night match illuminated the New York skyline in 1975 and transformed the sport forever. Now, the night session is not only a defining feature of the championship but part of the fabric of tournaments around the world. Typically, cooler temperatures, increased humidity and a slower ball speed characterize play after dusk. Some players thrive in this environment, including home favourite Taylor Fritz. Runner-up last year to fellow Rolex Testimonee Jannik Sinner, he is well aware of the strength, skill and poise required to perform in the vibrant surroundings of Arthur Ashe Stadium with some 23,800 spectators looking on. He says:

World No. 1 Sinner, who won his fourth Grand Slam® title in July at The Championships, Wimbledon, adds:

More than 20 years ago, Rolex Testimonee Justine Henin took part in one of the most fiercely contested and gruelling matches in US Open history. During her 2003 semi-final the Belgian legend memorably won a three-hour and three-minute marathon. Despite finishing that match after midnight, she returned to compete in the final the following day and lifted the women’s singles trophy for the first time. Henin, a seven-time Grand Slam® champion, reflecting on the importance of this victory, says:

Rolex’s partnership with the US Open reflects a deep commitment to tennis excellence dating back almost half a century. Since partnering with Wimbledon in 1978, its clocks have kept time at many of the most spectacular matches, day and night, with Rolex Testimonees often featuring, as they continually strive for the ultimate performance. Joining Fritz and Sinner in the singles draws at Flushing Meadows this year will be past champions Carlos Alcaraz, Coco Gauff and Iga Świątek, who recently won her maiden Wimbledon title. Meanwhile, Mirra Andreeva, Belinda Bencic, João Fonseca, Holger Rune and Ben Shelton will be among those aiming to prove they can conquer the conditions for the first time. Falling at the end of a thrilling northern hemisphere summer of tennis, this US Open will again reward those capable of summoning extraordinary endurance and resilience as they pursue greatness on their tennis journey.