HALLE, Germany — Yuichi Sugita of Japan upset third-seeded Dominic Thiem 6-2, 7-5 at the grass-court Gerry Weber Open on Wednesday.
The 52nd-ranked Sugita forced 13 break opportunities and took three as he advanced to a quarterfinal against American qualifier Denis Kudla.
Kudla defeated Stefanos Tsitsipas 6-3, 6-4 in their second-round match.
Seventh-seeded Kei Nishikori lost 6-2, 6-2 to Karen Khachanov of Russia.
Fourth-seeded Roberto Bautista Agut stayed in control against Robin Haase, winning 6-4, 7-5, and the Spaniard will next face Khachanov.
Defending champion Roger Federer plays Benoit Paire in the second round on Thursday.
This article was originally published by Espn.com. Read the original article here.