The 2021 U.S. Open has begun, and while the men's favorites will meet in the final, the women's side will end with a big surprise matchup: from August 30 through tomorrow (September 12), the world's top players will play at New York's Arthur Ashe Stadium and the USTA They will continue to play under the bright lights of the Billie Jean King National Tennis Center. [With Rafael Nadal and Roger Federer sidelined by injury (and defending champion Dominic Thiem also out with a wrist injury), the men's draw is not without some big stars, but not without some big storylines.

Not only will top seed Novak Djokovic overtake Nadal and Federer for the most Grand Slam titles in history. His 21st major title would make him the first man since Rod Laver to achieve a Grand Slam.

After defeating Kei Nishikori and eliminating Matteo Bellettini, Djokovic took all five sets to beat Alexander Zverev in an Olympic-sized rematch to reach the final. Today's Novak Djokovic vs. Daniil Medvedev live stream will see if the Serbian ace can beat his rival, whom he last played at the Australian Open, in another Australian Open final.

In the women's U.S. Open, Emma Raducanu defeated Leila Annie Fernandez as the tournament came to an end on Sunday. She won in straight sets (6-4, 6-3) and praised the field after her victory.

Everything you need to watch the 2021 U.S. Open live stream online is here.

American tennis fans can watch the 2021 U.S. Open on the ESPN family of networks.

ESPN and ESPN2 are available on most cable TV networks, but if you've cut cable TV, you can watch on two of the best streaming services: Sling TV and FuboTV.

In the UK and Ireland, the 2021 US Open will be exclusively available on Amazon Prime Video.

Match play begins on Monday, August 30 at 4 p.m. BST.

Canadians can watch the 2021 U.S. Open on TSN's network; the 2021 U.S. Open will run from the first round on Monday, August 30, through the men's final on Sunday, September 12.

Through Wednesday, September 8, ESPN will begin broadcasting daily at 11:00 a.m. ET and continue through the day and into the evening.

ESPN airs:

ESPN2 airs:

ESPN3 airs:

and ESPN+ airs hundreds of exclusive matches, including singles, doubles, junior and wheelchair matches, live on multiple courts daily.

The 2021 U.S. Open men's draw is headlined by No. 1 Novak Djokovic, who could face No. 4 Alexander Zverev in the semifinals. In the bottom half of the draw, No. 2 Daniil Medvedev and No. 3 Stefanos Tsitsipas will clash.

The women's draw is led by No. 1 Ashley Barty, who could face No. 4 Karolina Plishkova. Meanwhile, second-ranked Elina Svitolina could face third-ranked Naomi Osaka.