Emma Raducanu's health problems are not yet behind her after she was forced to undergo ankle surgery following an earlier operation on her hand.
Fifth seed Caroline Garcia and sixth seed Coco Cauff both came unstuck at the Madrid Open on Saturday, though No 2 seed Aryna Sabalenka had no such problems.
Simona Halep has critised the International Tennis Federation (ITF) after she was told her doping case hearing at the end of May might be postponed.
Defending champion and world number one Iga Swiatek showcased all her experience to book a semi-final place at the Porsche Tennis Grand Prix in Stuttgart.
Defending champion and world number one Iga Swiatek marked her return to the WTA Tour from injury with a win over Zheng Qinwen in Stuttgart.
Wimbledon will allow players from Russia and Belarus to compete at the 2023 Grand Slam tennis event.