Aryna Sabalenka and Ons Jabeur became the latest Wimbledon contenders to retire early from matches ahead of the Grand Slam tournament.
World number three Sabalenka appeared to be struggling with a shoulder injury and retired 5-1 down in her Berlin Open quarter-final against Anna Kalinskaya.
Two-time Wimbledon finalist Jabeur decided not to continue due to illness after dropping the first set 7-6 (11-9) to Coco Gauff.
Reigning Wimbledon champion Marketa Vondrousova and 2022 winner Elena Rybakina also retired from their matches earlier in the tournament.
The first round of women’s singles at Wimbledon starts on July 1.
Jabeur saved eight set points against Gauff before the American top seed took the opener.
The Tunisian, who appeared to be having trouble breathing, was seen by the doctor before deciding not to start the second set.
“It doesn’t feel like a win. We had such a good first set,” Gauff said in her on-court interview afterwards.
“I wish Us the best. I think it’s something that’s going to happen today and she’ll be better tomorrow, so hopefully she’ll be at Wimbledon.”
Earlier this week, Czech Vondrousova slipped and injured her right hip against Kalinskaya in the second round, while Rybakina withdrew from her last eight match against Victoria Azarenka due to illness.
Gauff will play compatriot Jessica Pegula or Katerina Siniakova from the Czech Republic in the semi-finals later on Saturday.
Pegula was leading 4-2 in the deciding set when rain interrupted play on Friday.
Kalinskaya, who is now 7-0 against top 10 players this season, will face former world number one Azarenka.
