ROTTERDAM, NETHERLANDS - FEBRUARY 14: ABN Amro WTT Kei NISHIKORI during the ABN AMRO World Tennis Tournament at the Ahoy Rotterdam on February 14, 2019 in Rotterdam Netherlands (Photo by Jan Kok/Soccrates/Getty Images)
ROTTERDAM, NETHERLANDS - FEBRUARY 14: ABN Amro WTT Kei NISHIKORI during the ABN AMRO World Tennis Tournament at the Ahoy Rotterdam on February 14, 2019 in Rotterdam Netherlands (Photo by Jan Kok/Soccrates/Getty Images)