KEY BISCAYNE, FL - MARCH 20: Thanasi Kokkinakis of Australia plays a shot against Daniel Taro of Japan during Day 2 of the Miami Open at the Crandon Park Tennis Center on March 19, 2018 in Key Biscayne, Florida. (Photo by Al Bello/Getty Images)
KEY BISCAYNE, FL - MARCH 20: Thanasi Kokkinakis of Australia plays a shot against Daniel Taro of Japan during Day 2 of the Miami Open at the Crandon Park Tennis Center on March 19, 2018 in Key Biscayne, Florida. (Photo by Al Bello/Getty Images)