Serena Williams advances in the US Open singles competition after defeating world No. 2 Antoinette Kontaveit

In what might be her final appearance at the US Open, Serena Williams defeated world No. 2 Anett Kontaveit in the second round of singles play on Wednesday at Arthur Ashe Stadium in New York.

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"Oh my goodness, I had to give my best effort because this could be it," I thought after dropping the second set. During a post-game interview on the court, Williams said to ESPN.

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Williams was more polished than she had in earlier games this season, when she was still working out the rust from a protracted break.

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With a full house at Arthur Ashe Stadium, Williams was not the underdog against Kontaveit, who presented a far tougher challenge for him.

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In the third round, Williams will go up against Ajla Tomljanovic of Australia. On Wednesday, Tomljanovic, who was competing at the same time as Williams, defeated Evgeniya Rodina of Russia 1-6, 6-2, 7-5.

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Additionally, Williams is not just playing singles; on Thursday night, she will debut in doubles alongside her sister Venus Williams.

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