WTA Dubai Duty Free Tennis Championship - Day Four [Getty Images]

DUBAI, UNITED ARAB EMIRATES - FEBRUARY 18: Karolina Pliskova of the Czech Republic in action in her match against Ana Ivanovic of Serbia during day four of the WTA Dubai Duty Free Tennis Championship at the Dubai Duty Free Stadium on February 18, 2015 in Dubai, United Arab Emirates. (Photo by Francois Nel/Getty Images)

Getty Images Sport Francois Nel