Lukas Rosol of the Czech Republic advanced to the finals of the Winston-Salem Open on Friday after beating Taiwan's Yen-Hsun Lu 7-5, 4-6, 6-4 in the final tuneup for next week's U.S. Open.
Rosol, seeded seventh, will take on the winner of Friday's second semifinal between Sam Querrey of the U.S. and Poland's Jerzy Janowicz on Saturday at the Wake Forest Tennis Center.
Rosol took a key service break from Lu to go up 5-4 in the third set, then saved three break points to serve out the match and advance to his third ATP Tour tournament final this year.
Lu, who had beaten Rosol in their only previous meeting last year in Thailand, twice had chances to put away Friday's match early. He used a service break to go up 4-1 in the first set before Rosol rallied, and nearly blew a 5-2 advantage in the second set before winning the set.