Berlin:Martina Hingis has missed the past six weeks on tour with various afflictions. Now a hip injury could cost her the French Open.
The fourth-seeded Swiss struggled on Thursday with a painful hip in a 6-4, 6-0 loss to compatriot Patty Schnyder in the third round of the German Open.
Having missed the last month and a half, the new ailment is making her question whether to defend her title next week at Rome or even whether she can play at Roland Garros.
"Definitely that's on my mind not to play Rome," Hingis said. "I have two weeks to get ready for the French Open. It was a learning experience here - I shouldn't play unless I am 100 percent."
"I'd like to make a decision soon what to do about my future," she added.
Third-seeded Svetlana Kuznetsova, No 5 Jelena Jankovic and No 7 Nadia Petrova were among those that advanced to the quarterfinals.
Kuznetsova beat Germany's Martina Mueller 6-3, 6-2, and Petrova beat compatriot and 10th-seeded Elena Dementieva 6-3, 6-3.
Jankovic advanced when Peng Shuai quit with an ankle injury with the Chinese leading 3-2 in the third set. Likewise, No 12 Ana Ivanovic of Serbia was leading Alona Bondarenko 6-3, 5-0 when the Ukrainian retired with an sprained left ankle.
Downpours led to a 90-minute delay at 3-3 in the first set between Hingis and Schnyder.
Hingis won the next game against the 15th-seeded Swiss after they returned to the court, then lost 15 of 16 points and the match.
"The rain delay surely wasn't good for me because the pain killers wore off," said Hingis, who described the pain as climbing from her hip into her lower back.
Among Hingis' problems is tendinitis. Hingis said earlier this week she wasn't physically ready to rejoin the tour, but didn't want to wait any longer.
"Giving my nagging problems, it's almost a wonder that I made it into the second round Wednesday," Hingis said. "I wanted to be fair today and not capitulate. That might not have been clever, but that's a different question."
Injuries forced Hingis into a three-year layoff, which she ended in 2005. She has climbed to No. 7 in the WTA Tour rankings and won three tournaments since returning.
Schnyder, a former top 10 player, faced Hingis for the first time since a 1999 loss at Indian Wells. She is now 2-2 lifetime against her compatriot.
"Obviously Martina was in great pain," Schnyder said. "But she's tough and I hope she will be able to get through a three-set match soon again."
Hours of rain delays prohibited second-seeded Amelie Mauresmo from completing her match against Julia Vakulenko. Maruesmo led 6-2, 1-1 when the match was suspended. Top-seeded Justine Henin wasn't able to begin her match against Maria Elena Camerin of Italy. Those matches will be completed on Friday.