ATP Houston

Results ATP Houston

Quarter-finals 13 April

USA John Isner
USA Steve Johnson
6 6 6
7 4 7
USA Jack Sock
USA Taylor Fritz
3 6 4
6 3 6
CRO Ivo Karlovic
AUS Nick Kyrgios
3 6 6
6 2 3
USA Tennys Sandgren
ARG Guido Pella
4 7 6
6 5 3