Karolina Pliskova Pictures

  • LONDON, ENGLAND - JUNE 27: Karolina Pliskova of Czech Republic prepares to serve during the Ladies' Singles second round match against Petra Martic of Croatia on day four of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 27, 2013 in London, England. (Photo by Dennis Grombkowski/Getty Images)