Results
ATP Houston
Last 16
11 - 12 April
John Isner
Henri Laaksonen
Frances Tiafoe
Steve Johnson
Jack Sock
Horacio Zeballos
Taylor Fritz
Ryan Harrison
Denis Kudla
Ivo Karlovic
Bjorn Fratangelo
Nick Kyrgios
Tennys Sandgren
Nicolás Kicker
Guido Pella
Sam Querrey