Mexico's Renata Zarazua pulled off a stunning upset by beating sixth seed Madison Keys while American Frances Tiafoe launched his latest bid to end the American men's drought at the U.S. Open with a confident win over Japan's Yoshihito Nishioka.

Zarazúa also became the first Mexican woman to ever beat a top-10 opponent at the U.S. Open. Keys, who prevailed in a twisting first-set tiebreak and then took the first three games of the second set at a clip,

Australian Open champion Madison Keys suffered a shock first-round defeat against Mexico’s Renata Zarazua amid searing heat at Arthur Ashe Stadium on Monday afternoon. Keys, the world No. 6, made a staggering 89 unforced errors in a marathon match against the 95th-ranked Zarazua,

France’s Benjamin Bonzi upset No. 13 Daniil Medvedev of Russia in the final match of Sunday's first-round play at the US Open.

Who is Daniil Medvedev? Is he a quirky character, who sometimes sails close to the wind while being good news for his sport? Or does his evident relish for being a provocateur cross the line of what’s acceptable on a tennis court?

The U.S. Open men's and women's singles competitions kicked off Sunday at the USTA Billie Jean King National Tennis Center in New York City, marking the start of the final Grand Slam of the year as Jannik Sinner and Aryna Sabalenka look to defend their titles.

The US Open broke records in 2024 by offering the largest purse in tennis history. The final Grand Slam tournament of 2025 is upping the ante this year. The 2025 US Open will be the first tennis event to reach $90 million in total player compensation,

Kvitova’s final WTA Tour title came in 2023 on the grass at Berlin. She was ranked as high as No. 2 in the world and had eight top 10 seasons (2011-2015 and 2018-2020). A four-time Olympian, Kvitova won a bronze medal at the Rio Olympics in 2016.

Twice Wimbledon champion Petra Kvitova bade an emotional farewell to professional tennis on Monday after her first-round defeat at the U.S. Open, saying she was most proud of her resilience and major triumphs during a memorable two-decade career.

Petra Kvitova looked to her right as she sat down in the U.S. Open’s main interview room for her final post-match news conference as a professional tennis player, and the two-time Wimbledon champion saw what she was hoping for.

Another year, another exciting, dramatic and unpredictable U.S. Open underway, with its championship games quickly approaching. The 145th annual tournament is taking place at the USTA Billie Jean King National Tennis Center in Flushing,