Serena extends unbeaten streak at Australian Open to 20 sets

Seven-time champion Serena Williams has advanced to the fourth round at Melbourne Park with a 6-2, 6-1 win over Dayana Yastremska.

The 16th-seeded Williams has now won 20 consecutive sets at Melbourne Park, having not dropped a set in her 2017 title run and winning three rounds here this year in straight sets. She did not play here in 2018 following the birth of her daughter.

Yamstremska received treatment during a medical timeout after she turned her right ankle while stretching to return a shot in the fifth game of the second set.

Williams won her 84th match at Melbourne Park, which is more than any other woman in Australian Open history. She has lost just 10 matches in 18 appearances at the tournament.

Williams, attempting to win a record 24th Grand Slam singles title, will next play either her sister Venus or top-seeded Simona Halep, who play later Saturday.