Winston-Salem, NC (Sports Network) - Former Wimbledon runner-up Tomas Berdych was a come-from-behind quarterfinal winner Thursday at the $550,000 Winston-Salem Open, a final U.S. Open tune-up.

The second-seeded Berdych overcame capable Belgian Steve Darcis 4-6, 6-2, 6-0 on the hardcourts at Wake Forest University.

The Czech slugger Berdych will meet seventh-seeded American favorite Sam Querrey in Friday's semifinals. Querrey, who titled in Los Angeles last month, upended fourth-seeded Ukrainian Alexandr Dolgopolov, 7-5, 4-6, 7-6 (7-3).

Querrey has won 13 of his last 16 matches and leads the U.S. Open Series standings.

The 2012 Winston-Salem champion will collect $73,930.