RESULTS Friday, April 13, 2018 [6] Steve Johnson (USA) d [1] John Isner (USA) 7-6(4) 4-6 7-6(5) Taylor Fritz (USA) d [3] Jack Sock (USA) 6-3 3-6 6-4 Ivo Karlovic (Croatia) d [4] Nick Kyrgios (Australia) 3-6 6-2 6-3 [8] Tennys Sandgren (USA) d Guido Pella (Argentina) 4-6 7-5 6-3   Doubles Semifinal Round Max Mirnyi (Belarus) & Philipp Oswald … [Read more...] about ATP World Tour – U.S. Clay Court Championship – Results and Schedule