Emma Navarro continued her breakout season as the American moved into her first grand slam semi-final with a 6-2, 7-5 win over Spain's Paula Badosa on Tuesday at the US Open.

In a battle of New York-born baseliners, Navarro, who beat defending champion Coco Gauff in the previous round, stunned Badosa by winning the final six games of the second set to wrap up victory in 72 minutes.

Navarro consolidated an early break to go 3-0 up and leaned on her remarkable forehand while turning aside the two break points she faced to secure the first set in convincing fashion.

Badosa, flying the Spanish flag but born in New York, opened up a 4-1 double break lead in the second set and looked poised to force a decider after a routine hold put her ahead 5-1 before enduring a stunning collapse.

The 26th seed twice failed to serve out the set while Navarro twice held to love to pull ahead before closing out the match with her fifth break.

Navarro has found another gear in 2024 after having never advanced past the second round at a grand slam prior to this year.

Sinner vs Medvedev

Top-seeded Jannik Sinner reached the quarter-finals by shaking off a slow start and coming through in the clutch at the end of tie-breakers that decided the first two sets, then pulling away to get past No. 14 Tommy Paul 7-6(3), 7-6(5), 6-1.

Two weeks removed from being cleared in a doping case stemming from two positive tests in March, Sinner moved into a showdown against 2021 champion Daniil Medvedev, the only past winner at Flushing Meadows still in the men’s field.

Sinner, a 23-year-old from Italy, claimed his first grand slam title at the Australian Open in January by defeating Medvedev in five sets in the final after dropping the first two. They also met in the Wimbledon quarter-finals in July, and Medvedev won that one.

Women’s top seed Iga Swiatek walloped Liudmila Samsonova 6-4, 6-1 to reach the quarter-finals, keeping her pristine sprint through Flushing Meadows on track at Arthur Ashe Stadium.

Swiatek, the only former champion remaining in the women’s draw, has not lost a set since she arrived in New York and looked every bit the veteran in her 100th major match as she dropped only four of her first serve points.

Samsonova was on the hunt for her first major quarter-final but never got into the match as she was unable to set up a single break point and unforced errors cost her dearly.

Swiatek next faces American Jessica Pegula.

Against Paul on Monday night, Sinner was not at his best at the outset, falling behind by a double-break at 4-1 after 20 minutes at Arthur Ashe Stadium.

“That’s where you want to be. ... It’s definitely different than any other setting,” Paul said. “It’s electric.”

A loud crowd was backing the American, to no one’s surprise. As the match went on, plenty of chants of “U-S-A!” or “Let’s go, Tommy! Let’s go!” rang out. There also were several moments where spectators clapped after faults by Sinner — considered poor etiquette in tennis, that drew repeated admonishments from the chair umpire, who pleaded for no noise between first and second serves.

Sinner finished the initial set with 15 unforced errors on the forehand side alone, but he cleaned that up quickly and closed the match with just six the rest of the way.

“There are some ups and downs, obviously, in best-of-five. That’s normal to have,” Sinner said.

“But finding my rhythm in the end of the match hopefully helps ... in the next match.”

Everything hinged on the tie-breakers. The first was tied 3-all, before Sinner grabbed the last four points. Paul led 5-4 in the second, but Sinner took the last three points.

That meant Sinner has now won 14 of his past 15 tie-breakers, a stretch that dates to a tournament in Halle, Germany, in June. The lone exception was one he lost against Medvedev at Wimbledon.

Sinner dropped the first set he played at the US Open, but he’s won the next 12.

The fifth-seeded Medvedev picked up a 6-0, 6-1, 6-3 victory over Nuno Borges that briefly was interrupted early in the third set when the electronic line-calling system was shut down because of a fire alarm.

The other quarter-final will be No. 10 Alex de Minaur vs No. 25 Jack Draper.