Michaella Krajicek at the 2015 BNP Paribas Open in Indian Wells, California. Photo by Alejandro Gonzalez.

Dutch player Michaella Krajicek returns to Na Li of China during their first round match for the Wimbledon Championships at the All England Lawn Tennis Club, in London, Britain, 25 June 2013. EPA/TOM HEVEZI

Michaella Krajicek of the Netherlands returns to Petra Martic of Croatia during their first round match for the French Open tennis tournament at Roland Garros in Paris, France, 28 May 2012. G EPA/CAROLINE BLUMBERG

Dutch player Michaella Krajicek returns to Yaroslava Shvedova from Kazakhstan during the second round of the tennis tournament Topshelf Open in Rosmalen, Netherlands, 18 June 2014. EPA/KOEN SUYK

Michaella Krajicek at the BNP Paribas Open tennis tournament in Indian Wells. Photo by Alejandro Gonzalez.