The US Open, the final major tennis tournament of the year, finishes Day 1 action. Here's a look ahead to Day 2.

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,

Djokovic, 38, beat Tien, 6-1, 7-6, 6-2 to improve to 19-0 in US Open first-round matches, tying Roger Federer for first all-time. But he labored with low energy, a nasty blister on his right big toe and Tien’s level, especially in the second set.

Tennis icon Novak Djokovic once again etched his name in the record books after his opening win over Learner Tien in the US Open.

As a tennis veteran, Djokovic will know match sharpness is very different to playing practice sets, so it was no surprise that his physical levels collapsed mid-way through his match against the young and hungry Tien.