Aryna Sabalenka toppled world No. 1 Iga Swiatek 6-2, 2-6, 6-1 on Sunday to set up a title clash with Caroline Garcia at the season-ending WTA Finals.

Seventh-ranked Sabalenka avenged a three-set defeat to Poland's Swiatek in the semifinals at the U.S. Open, where Swiatek went on to capture her second Grand Slam title of the year after her victory at Roland Garros.

Sixth-ranked Garcia of France had powered past Greece's Maria Sakkari 6-3, 6-2 in the other semifinal.

Sabalenka, who called it a "miracle" that she qualified for the event after her mid-season struggles, fired 23 winners, including a dozen aces, with just 19 unforced errors.

Swiatek, whose remarkable season included eight singles titles and a run of 37 straight match victories, saw her 15-match winning streak against the top 10 players end.

"I just want to make sure that every time she plays against me, she knows that she really has to work hard to get a win," said Sabalenka, who had lost all four of her prior matches against Swiatek this year. "Only because of this thinking, I was able to play such an amazing level tonight."

Swiatek had been broken just once as she won all three of her round-robin matches but was broken three times in the opening set Sunday as Sabalenka took charge.

Swiatek seemed to have re-set, however, when she raced to a 4-0 lead in the second before Sabalenka managed to fend off a break point to hold for 4-1. Although Sabalenka broke to cut the deficit to 4-2, Swiatek regained the break and swiftly served it out to knot the match at one set apiece.

As in their U.S. Open clash, Sabalenka went up an early break in the third.

This time, however, she was able to make the advantage stand up, breaking again for a 5-1 lead and closing it out in impressive style with an ace and a service winner.

"Aryna just played better, you could see that," said Swiatek, whose usually fearsome forehand proved unreliable. "In the second set I wanted to kind of overpower her, but in the third, I felt like it's not my kind of game. I feel like I was playing too risky. And in third, she for sure used her chances and she served really well."

But Swiatek, who counted four WTA 1000 titles along with her two Grand Slams among her eight trophies in 2022, admitted she wasn't sorry to be heading into a holiday.

"It was pretty hard to see the finish line but still be fully motivated and ready for every match," she said. "This season has been so intense and I'm so proud of myself that I could play so well till the end. I'm happy that it's done."

On Monday, Sabalenka and Garcia will renew a rivalry that has seen them split their four encounters 2-2.

Garcia, who has powered up the rankings with three titles this season, put on a clinic against Sakkari, wrapping up the win in 75 minutes.

She gained the decisive break in the first for a 4-2 lead and closed out the set with a love game, then powered to a 4-0 lead in the second.

Garcia's first double fault of the match gave Sakkari a breakpoint in the sixth game, but Garcia responded with an ace and grabbed a 5-1 lead with a stinging backhand that kissed the sideline.

Sakkari held to force Garcia to serve it out, and she polished it off on her second match point when Sakkari sent a service return into the net.

Garcia, who could only kneel to catch her breath after a thrilling three-set win over Daria Kasatkina on Saturday to capture the last semi-final spot, had plenty of energy for a skipping, leaping celebration on the court at Dickies Arena in Fort Worth.

"This morning, obviously the legs were a bit heavy," Garcia said. "But I was just so excited, the emotion and the win yesterday to be playing a semi-final of the WTA Finals."

The event was moved to Texas due to continuing pandemic-related issues with the Chinese city of Shenzhen, which was initially due to host, as well as the WTA's dispute with China over the status of player Peng Shuai.