Adam Pavlasek Pictures
PERTH, AUSTRALIA - JANUARY 01: A general view of play during the mixed doubles match between Coco Vandeweghe and Jack Sock of the United States against Lucie Hradecka and Adam Pavlasek of the Czech Republic on day one of the 2017 Hopman Cup at Perth Arena on January 1, 2017 in Perth, Australia. (Photo by Will Russell/Getty Images)