NOTTINGHAM, ENGLAND - JUNE 12: Alison Riske of USA in action during her match against Karolina Pliskova of Czech Republic on day seven of the WTA Aegon Open on June 12, 2016 in Nottingham, England. (Photo by Jon Buckle/Getty Images for LTA)
NOTTINGHAM, ENGLAND - JUNE 12: Alison Riske of USA in action during her match against Karolina Pliskova of Czech Republic on day seven of the WTA Aegon Open on June 12, 2016 in Nottingham, England. (Photo by Jon Buckle/Getty Images for LTA)