Jessica Pegula advanced to the U.S. Open semifinals for the second straight year after dispatching Barbora Krejčíková in straight sets,6-3, 6-3, on Tuesday. Through five matches in Flushing, the 31-year-old Pegula, who is seeking her first Grand Slam tournament title, has yet to drop a set. [Join or create a Yahoo Fantasy Football league for the 2025 NFL season] Pegula stormed out to a 3-0 lead in the opening set, putting Krejčíková into catchup mode. The former French Open and Wimbledon champion did cut Pegula's advantage to 4-3, but the American pulled away to win the final two games. Title chase is 🔛Last year's runner-up Pegula takes down Krejcikova in straights!pic.twitter.com/OZMdKqsyL7 — US Open Tennis (@usopen)September 2, 2025 In the second set, Krejčíková's serving issues continued and Pegula took advantage. Krejčíková's overall first serve win percentage was43% in the matchand she was 31% in second serve win percentage. "I think I've been playing some really good tennis, I've just been playing very solid," Pegula said after the match. "I've been having very good starts, so I really wanted to do that today, especially against someone like her who's very dangerous." Pegula, a three-time winner on tour this year, will face either No. 1 Aryna Sabalenka or Markéta Vondroušová in the semifinals on Thursday. Sabalenka and Vondroušová will play their quarterfinal match on Tuesday evening.