March 27, 2017: Nick Kyrgios, of Australia, serves against Ivo Karlovic, of Croatia, during his winning match at the 2017 Miami Open presented by Itau professional tennis tournament, played at Crandon Park Tennis Center in Key Biscayne, Florida, USA. Kyrgios d Karlovic 6-4 6-7(4) 7-6(2). Mario Houben/CSM