World number one Iga Swiatek reached the quarterfinals of the WTA500 Stuttgart event with a straight-sets win over Zheng Qinwen on Thursday on her return from injury.
The Pole won 6-1, 6-4 with a dominant first set putting her on course for victory in just under 90 minutes at the clay-court tournament.
After Zheng broke to lock the second set at 4-4, the two-time French Open winner broke back immediately and then served out the match.
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Swiatek withdrew from the Miami Open and Billie Jean King Cup qualifiers with a rib injury, but told reporters on Wednesday: “I’m not injured anymore.”
Coco Gauff’s French Open warm-up stalled as last year’s Roland Garros runner-up fell in the last 16 to Anastasia Potapova.
The Russian impressed with her returning game to dominate the American, winning 6-2, 6-3.
World number six Gauff, who made it past Potapova’s compatriot Veronika Kudermetova in three sets despite an error-ridden second-round performance on Wednesday, converted none of her six break points against Potapova.
Potapova, ranked 24th, is competing in Stuttgart for the first time with the 22-year-old advancing to her fourth quarter-final of the year.
Earlier on Thursday, Czech former world number one Karolina Pliskova fought past Croatian Donna Vekic 6-2, 6-7(5), 7-6(5).
Pliskova, who won at Stuttgart in 2018, dominated the first set but lost the second in a tie-break. She clinched victory in the third in another tie-break.
