CHARLESTON, S.C. — American Amanda Anisimova rallied after losing the opening set to defeat top-seeded Aryna Sabalenka of Belarus 3-6, 6-4, 6-3 and reach the quarterfinals of the Charleston Open on Thursday.
In another surprise, Coco Vandeweghe also reached the round of eight by defeating U.S. countrywoman and sixth-seeded Jessica Pegula 6-4, 3-6, 6-4.
Fourth-seeded Ons Jabeur, whose match was suspended Wednesday because of rain and lightning with her leading 6-3, 5-2, returned Thursday to win one game and finish off Emma Navarro.
Sabalenka had won her first match in nearly six weeks here Wednesday and took the opening set without much of a struggle. But Anisimova, 20, who is ranked 47th in the world, found her rhythm after the break as Sabalenka began to make mistakes.
Sabalenka had two straight double faults to trail 5-3 and Anisimova was able to serve out the set.
Anisimova continued her run in the deciding set, breaking Sabalenka’s serve twice for a 4-0 lead. Sabalenka got to 5-4, but Anisimova closed out the match with her sixth ace and improved to 3-0 all-time against the world’s fifth-ranked player.
Anisimova was thrilled with her third match victory in as many days. She will face Vandeweghe on Friday to try to reach the semifinals.
“It’s a pretty good result, like in the quarterfinal, and especially against a top seed,” Anisimova said. “It’s a big confidence boost.”
Jabeur, of Tunisia, had hoped to squeeze in more tennis and wrap up the match Wednesday. She only needed a few minutes — and four points — to finish off Navarro, the American. Jabeur has a third-round match with Irina-Camelia Begu of Romania later Thursday.
The tournament has been affected by bad weather all week and Thursday was no different. Afternoon matches were suspended for close to two hours as a storm passed through the Daniel Island facility.
Things are forecast to dry out Friday and through the championship match Sunday.