Six-time champion of the US Open, Serena Williams, clinched a crucial win over Karolina Muchova from the Czech Republic to enter the pre-quarterfinals of the ongoing US Open Grand Slam competition.

Williams beat Muchova 6-3, 6-2 after as she converted five out of nine break points against Karoliona Muchova.

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Barring a broken service midway through the second set, it was a great display of attacking tennis from Serena in Arthur Ashe Stadium. She later described her performance as “intense.”

She is set to face Petra Martic in the Round of 16 who is coming into the match on the back of a win against Anastasija Sevastova from Latvia 6-4, 6-3.

Meanwhile, Ashleigh Barty and Karolina Pliskova also proceeded to the next round of the competition.