In other action, Thiem defeated Gerald Melzer and Tsonga ousted Benjamin Becker.
Oct 25, 2016
''I am happy to be in the semifinals, but I'd rather [have] won against a different opponent today,'' said Gerald Melzer.
Jul 21, 2016
Kohlschreiber, who was seeded second, was upset by the 104th-ranked Khachanov, 6-4, 6-4.
Jul 20, 2016
Jurgen's younger brother, Gerald, defeated 2011 finalist Montanes for his first win at the ATP level this year.
Jul 19, 2016
The Austrian will miss the Rio Olympics.
Nov 26, 2015