NO EASY TRIUMPH

MIAMI (AFP) — World No. 1 Iga Swiatek kept her nerve to beat 26th-ranked Linda Noskova of the Czech Republic 6-7 (7-9), 6-4, 6-4 at the WTA Miami Open on Sunday.

A day after Swiatek's closest challenger, Aryna Sabalenka, was knocked out of the tournament, the Pole faced a real test from Noskova.

The Czech had upset Swiatek in the third round of the Australian Open before the four-time Grand Slam winner gained revenge at Indian Wells.

The third meeting this year between the pair was, not surprisingly, a tight affair.

Having worked hard to recover from her opening set tie-break loss and taken the match into a deciding frame, Swiatek found herself facing three break points when serving for the match up 5-4.

But she stepped up her game to win the next five points and celebrated with a fist-pumping gesture to her box.

"It wasn't easy. There were just many ups and downs," Swiatek said.

"I'm happy that after first set I had better idea on what to do, and I just tried to do that in important moments. Sometimes we have matches like that and we need to figure out how to close them anyway."

Swiatek, who is looking to become just the second woman to win the "Sunshine Double" of Indian Wells and Miami, will face 14th seed Ekaterina Alexandrova in the Round of 16 on Monday. Alexandrova went through with a 6-4, 3-6, 6-3 win over fellow Russian Anastasia Pavlyuchenkova.

Caroline Garcia of France progressed to a fourth-round match against world No. 3 Coco Gauff with a 7-6 (7/4), 7-5 win over Naomi Osaka.

It was a hard-hitting match with the pair sharing 28 aces and Osaka had to fight to take the first set to a tie-break, saving three set points.

Garcia secured the tie-break with forehand winner but found herself trailing Osaka, 4-2, in the second before breaking back.

With Osaka serving at 5-all, Garcia forced two break points, converting the second.

Reigning US Open champion Gauff was down 4-2 in the first set to France's Oceane Dodin before winning 10 straight games and running out a 6-4, 6-0 winner.

Gauff said she expected a difficult game against Garcia.

"She's tough. We all know how she plays. Takes the ball super early, plays very aggressive," she said.

Fifth-seeded American Jessica Pegula beat Filipino-Canadian Leylah Fernandez 7-5, 6-4 to set up a fourth-round clash with in-form compatriot Emma Navarro.

Fernandez broke to take a 5-3 lead in the first set but Pegula responded perfectly, winning four straight games to take the set.

Both players struggled to hold serve in the second set, with the first seven games going against serve, but Pegula finally held to go 5-3 up and she held the final game to love to secure the win.

Pegula, the highest-ranked American woman, will play against the rising star of USA women's tennis in Navarro, who upset
12th-seeded Italian Jasmine Paolini 6-2, 3-6, 6-0.

Paolini, who won the WTA 1000 Series event in Dubai earlier this year, faded after fighting back in the second set while Navarro confirmed her status as one of the most improved players on the tour.