Serena, Sabalenka set up blockbuster; Su-wei in fourth round

Serena Williams overcame an error-strewn start Friday to thwart Anastasia Potapova and set up a blockbuster fourth-round clash with seventh seed Aryna Sabalenka while 2019 champion Naomi Oska was set for a showdown with last year’s runner up Garbine Muguruza at the Australian Open.

Williams had 31 unforced errors but wore down the Russian 7-6 (7/5), 6-2 in 97 minutes on Rod Laver Arena.

Naomi Osaka had to deal with a butterfly landing on her but was otherwise little bothered as she breezed into the last 16 and a showdown with Muguruza, who beat Zarina Diyas 6-1, 6-1 in just 56 minutes.

Later, French Open champion Iga Swiatek, 19, seeded at a Grand Slam for the first time, beat France’s Fiona Ferro 6-4, 6-3 to set up a meeting with Simona Halep, a 6-1, 6-3 winner over Russia’s Veronika Kudermetova.

Serena, the 10th seed had…