KEY BISCAYNE, FL - MARCH 30: Nick Kyrgios of Australia looks on in his match against Alexander Zverev of Germany at Crandon Park Tennis Center on March 30, 2017 in Key Biscayne, Florida. (Photo by Julian Finney/Getty Images)
KEY BISCAYNE, FL - MARCH 30: Nick Kyrgios of Australia looks on in his match against Alexander Zverev of Germany at Crandon Park Tennis Center on March 30, 2017 in Key Biscayne, Florida. (Photo by Julian Finney/Getty Images)