US Open: Jessica Pegula upsets No. 1 Iga Swiatek to reach her first Grand Slam semifinal

NEW YORK (AP) — The questions wouldn’t stop for Jessica Pegula: Why was she 0-6 in Grand Slam quarterfinals heading into her U.S. Open matchup against No. 1 Iga Swiatek? What could Pegula do about it?

Came up during her on-court interview after winning in the previous round. And again at the news conference that followed. And again during a brief TV interview right before striding onto the court at Arthur Ashe Stadium on Wednesday night.

If that all weighed on Pegula, the 30-year-old American hid it well, pulling off a big upset by easily beating Swiatek 6-2, 6-4 at Flushing Meadows and earning a debut trip to the semifinals at a major.

“There have been so many freaking times, and I just kept losing,” said Pegula, who has won 14 of her past 15 matches, all on hard courts. “I know everyone keeps asking me about it, but I was like, ’I don’t know what else to do. I just need to get there again and, like, win the match.’ So thank God I was able to do it. And finally — finally! — I can say, ‘Semifinalist.’”

She will face unseeded Karolina Muchova of the Czech Republic on Thursday for a berth in the final.

Muchova, the runner-up to Swiatek at the 2023 French Open, made it to the final four in New York for the second consecutive year with a 6-1, 6-4 victory over No. 22 seed Beatriz Haddad Maia earlier Wednesday.

“I know she has a lot of experience going deep in Slams,” the No. 6-seeded Pegula said about Muchova, whom she defeated at the Cincinnati Open last month. “I’ll worry about that, maybe, when I wake up in the morning.”

The other women’s match Thursday also will feature an American making her major semifinal debut, No. 13 Emma Navarro, against No. 2 Aryna Sabalenka, who has won the past two Australian Open titles. Sabalenka lost to Coco Gauff in the 2023 final in New York; Navarro ended Gauff’s title defense in the fourth round.

There are two Americans in the men’s semifinals, too, but they’ll face each other: No. 12 Taylor Fritz takes on No. 20 Frances Tiafoe on Friday. The other men’s matchup that day will be No. 25 Jack Draper against No. 1 Jannik Sinner or No. 5 Daniil Medvedev, the last remaining past U.S. Open winner in the field.

The lopsided nature of Pegula’s win was surprising, but she did not think this day would never arrive.

“I knew I could do it. I just had to go out and execute my game and not get frustrated,” she said. “Luckily I felt like I was able to take advantage of some things she wasn’t doing well very early and then was able to kind of ride that momentum throughout the match.”

Swiatek served poorly in the first set and her forehand was a real problem, with 22 of her 41 unforced errors coming on that side. Pegula made only 22 unforced errors in all and used terrific defense to keep forcing Swiatek to hit an extra shot.

Pegula repeatedly did what seemed nearly impossible lately against Swiatek, who counts the 2022 U.S. Open among her five Grand Slam titles and has led the WTA rankings for most of the past 2 1/2 years: break her serve.

Entering Wednesday, Swiatek had lost just a pair of service games across four matches in the tournament, both in the first round — and she didn’t even face a single break point in any of her most recent three contests. That’s all part of why the 23-year-old from Poland was listed as a -350 money-line favorite against Pegula, according to BetMGM Sportsbook.

But Pegula, whose parents own the NFL’s Buffalo Bills and NHL’s Buffalo Sabres, didn’t have much trouble in that department, especially at the outset, breaking in each of Swiatek’s initial two service games, which both ended with double-faults, and three of the first six.

It helped that Swiatek was unable to properly calibrate her first serves early, putting just 2 of 12 — 16.7% — in play at the start, only 36% for the opening set.

Even as the games kept going in her favor, Pegula didn’t show much perceptible emotion, whether grabbing a 4-0 lead just 21 minutes in or taking up that set, which was greeted with a slight shake of her left fist as she walked to her sideline seat.

Swiatek didn’t hide her thoughts that well. She smacked her racket against the top of the net. She slapped her right thigh after a forehand flew wide to get broken yet again and trail 4-3 in the second set.

Fifteen minutes later, it was over.

After losing to Gauff in the U.S. Open semifinals in 2023, Muchova needed surgery on her right wrist in October and was off the tour for about 10 months, returning this June. That was the latest in a series of injuries for Muchova, who called it “one of the worst ones that I had.”

“Now, looking back,” she said, “I’m, like, ‘Oh, it actually flew by, the time, and I feel strong again.’”