World No. 259 stuns Wawrinka

Three-time Grand Slam champion Stan Wawrinka blew a one-set lead to fall 4-6, 6-3, 6-2 to unfancied Dutchman Tallon Griekspoor in a first-round shock at the Rotterdam Open on Tuesday.

The Swiss fifth seed slumped to another surprise defeat by an outsider, after losing in the Australian Open second round to Tennys Sandgren.

Wawrinka is struggling to regain top form after two knee operations. He has now lost three matches and won three since a return in January.

Meanwhile it was world number 259 Griekspoor biggest success of his career in only his third ATP-level match.