MELBOURNE, Australia — Coco Gauff still hasn’t lost a match or even at set at the Australian Open — or, actually, this season. She moved into the fourth round at Melbourne Park with a straightforward 6-4, 6-2 victory over 2021 U.S. Open runner-up Leylah Fernandez on Friday night.

While there have been plenty of surprises in the men’s bracket so far, most of the top women have progressed through the draw without an issue. That includes wins on Friday for No. 1 Aryna Sabalenka, who is the two-time defending champion in Australia, No. 3 Gauff, No. 11 Paula Badosa and No. 14 Mirra Andreeva.

And today, the only women’s match featuring Grand Slam singles champions in the third round turned out to be an overpowering win by Iga Swiatek over Emma Raducanu.

Swiatek won the final 11 games of the match to beat 2021 U.S. Open champion Raducanu 6-1, 6-0 and become the first player through to the fourth round.

The No. 2-ranked Swiatek has won the French Open four times and the U.S. Open in 2022. She is more than halfway to a possible Australian title — her best result here has been a semifinal appearance in 2022, losing to eventual runner-up Danielle Collins.

However, No. 7 seed Jessica Pegula was ousted by world No. 55 Olga Danilovic in two sets Friday.

The Serbian player beat the U.S. Open runner-up 7-6 (3), 6-1 after she hit 28 winners and saved all six break points she faced.

Naomi Osaka, a two-time champion in Australia, stopped playing because of a strained abdominal muscle after dropping the first set of her match against Tokyo Olympics gold medalist Belinda Bencic.

Men’s winners in third-round action included No. 2 Alexander Zverev, No. 3 Carlos Alcaraz, No. 7 Novak Djokovic, No. 12 Tommy Paul and No. 15 Jack Draper. Djokovic — who won 10 of his 24 Grand Slam titles at the Australian Open — overcame some mid-match breathing trouble to dismiss No. 26 Tomas Machac 6-1, 6-4, 6-4 at night.

Alejandro Davidovich Fokina had a much more difficult path, coming back from two sets down for the second match in a row and saving two match points to sneak past 19-year-old Jakub Mensik 3-6, 4-6, 7-6 (7), 6-4, 6-2.

A year ago, 2023 U.S. Open champion Gauff had her best run in Melbourne, getting to the semifinals before bowing out against Sabalenka, who extended her winning streak at the tournament to 17 matches by eliminating Clara Tauson 7-6 (5), 6-4 on Friday.

Like Gauff, Sabalenka is unbeaten in the early going in 2025. They could meet in the semifinals again this time around next weekend.

Gauff needed just 75 minutes to get past Fernandez, a left-hander who was seeded 30th. Gauff was broken just once and compiled an 18-7 advantage in total winners.

Neither Sabalenka nor Tauson served all that well in Rod Laver Arena. Maybe it was the sun. Maybe it was the wind. Maybe it was slower court conditions.

The first seven games of the match were all breaks, and Tauson was the first to hold, leading 5-3. But that’s when Sabalenka began to get going.

Next for her is a matchup with 17-year-old Andreeva, a 6-2, 1-6, 6-2 winner against No. 23 Magdalena Frech. Badosa barely emerged to beat No. 17 Marta Kostyuk 6-4, 4-6, 6-3, and 2021 French Open runner-up Anastasia Pavlyuchenkova, the 27th seed, defeated Laura Siegemund 6-1, 6-2. Siegemund took a big step back after beating No. 5 Qinwen Zheng, who was the runner-up to Sabalenka in Australia last January and won a gold medal at the Paris Olympics in August, in her last match.

Alcaraz ceded a set for the first time this week but beat Nuno Borges 6-2, 6-4, 6-7 (3), 6-2, Zverev defeated Jacob Fearnley 6-3, 6-4, 6-4, and Paul got past Robert Carballes Baena 7-6 (0), 6-2, 6-0. Draper rallied to beat Aleksandar Vukic 6-4, 2-6, 5-7, 7-6 (5), 7-6 (8) and set up a fourth-round meeting with Alcaraz.