SYDNEY (REUTERS) - Former 2005 US Open winner Samantha Stosur is in doubt for Wimbledon next month after suffering stress fractures in her right hand, Australian media reported on Friday.

The 33-year-old was hampered by the injury during her fourth-round loss to eventual champion Latvian Jelena Ostapenko at Roland Garros earlier this month.

Stosur returned to Australia for treatment for what was initially thought to be a soft tissue injury but tests revealed the stress fractures, News Ltd media said.

The world No. 34 has already withdrawn from the June 23-July 1 Eastbourne tournament, which she had entered to prepare for the grass court Grand Slam, the report said.