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Top-ranked Aryna Sabalenka found a groove after some early struggles to hold serve and overpowered Taylor Townsend on Sunday to reach the quarterfinals of the US Open.

After another wildly unpredictable start to a major, the second week of the US Open is upon us. And there are 10 Americans left in the draw.

Though Naomi Osaka struggled at times Saturday night, she can defy the odds against Elena Rybakina on Monday. Here's how.

Coco Gauff shook off struggles with her first serve Saturday to defeat Cristina Bucsa in straight sets and advance to the fourth round of the US Open.

Zheng Qinwen won the final seven games to storm back against Madison Keys, and Naomi Osaka rallied from down 4-2 in the third set to advance at the US Open.

No. 9 seed Taylor Fritz blew a two-set lead at the US Open and went out in a shocker with a 3-6, 4-6, 6-3, 6-4, 6-4 loss at the hands of No. 24 Francisco Cerundolo on Saturday.

Zheng Qinwen rallied past Madison Keys and Anastasia Potapova ousted Amanda Anisimova in a pair of high-profile upsets on Saturday at the US Open.

Serena and Venus Williams are out of the US Open women's doubles after losing to Hao-Ching Chan and Maya Joint in a third-set tiebreaker.

Feeling better than he expected after a four-month absence, Carlos Alcaraz is planning to take more breaks during the tennis season.

US Open tournament director Eric Butorac handles player and broadcast scheduling requests. It's hectic and tough to please everyone -- but he loves it.