WINSTON-SALEM, N.C. (AP) Top-seeded Andy Roddick rolled to a 6-1, 6-4 victory over Argentina's Juan Monaco on Thursday afternoon in the Winston-Salem Open quarterfinals.
Roddick will take on fellow American John Isner in Friday's semifinals. Isner rallied past eighth-seeded Marcos Baghdatis of Cyprus 1-6, 6-3, 6-4 earlier Thursday.
Roddick needed just more than an hour on a hot afternoon as he dominated with his serve, getting his first serve in 81 percent of the time.
Monaco, who was the seventh seed, gave up nine aces to Roddick and failed to break Roddick's serve.
The event is a final tuneup before the U.S. Open, which begins Monday.