S-Hertogenbosch - Four-time Grand Slam winner Kim Clijsters injured her ankle in a 7-6 (7-5), 6-3 second-round loss at a Dutch grass court tune-up event and could miss out on Wimbledon.
The former world No 1 was defeated by Italian qualifier Romina Oprandi but said afterwards that the ankle which she first hurt while dancing at an April wedding was again a problem.
"The pain isn't as bad as when it first happened," said the Belgian, 2003 winner of the tournament. "I hope tests will say it's not too bad."
But the 28-year-old confessed that the joint has never been right since her accident. Cljisters lost in the French Open second round playing at well under her best to Dutch youngster Arantxa Rus. "It didn't get better after medication."
Clijsters said she had been considering ending her career after next year's London Olympics, but may still be lured by the US Open starting only days afterwards, a major which she has won three times.
"The Olympics will be the last big focus in my career, but of course the US Open is only a few weeks after that, so we'll see."
Clijsters played Wimbledon in 2010 for the first time since 2006 after retiring two years earlier to have a child. She then changed her mind in 2009 when she came back to win the Open on two successive occasions.