Kim Clijsters withdraws from Unicef Open

Tournament organizers say Kim Clijsters has withdrawn from the

Unicef Open with an abdominal strain just hours before she was due

to play Urszula Radwanska in the semifinals.

The four-time Grand Slam winner’s physiotherapist, Sam

Versleghers, said Clijsters dropped out of the Dutch grass-court

tournament on Friday to avoid jeopardizing her chances of playing

at Wimbledon, which starts Monday.

The 29-year-old Belgian is unseeded at Wimbledon for the first

time since 2000 and has a tough first-round draw against

18th-seeded Jelena Jankovic of Serbia.

Clijsters said earlier this year she intends to retire after the

US Open, where she won in 2005, 2009 and 2010. She also won the

Australian Open in 2011.