LONDON, ENGLAND - JUNE 23: Samantha Stosur of Australia plays a forehand during the Ladies' Singles first round match against Yanina Wickmayer of Belgium on day one of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 23, 2014 in London, England. (Photo by Jan Kruger/Getty Images)

London - Former US Open champion Sam Stosur's unhappy union with Wimbledon continued on Monday as the Australian became the highest seed to fall by the wayside after a 6-3 6-4 first-round defeat by Belgian Yanina Wickmayer.

Cheered on by four-time grand slam champion Kim Clijsters from the stands, Wickmayer dominated play from the baseline to leave the 17th seed chasing shadows on a warm and sunny day at southwest London.

The result condemned Stosur to her sixth first-round exit at the grasscourt major, a tournament where she has failed to progress beyond the third round in 12 visits.

Wickmayer will next face Croatia's Ana Konjuh for a place in the third round.