MELBOURNE, Australia — Iga Swiatek rushed through her first set in 26 minutes and completed her 6-0, 6-2 second-round win over Rebecca Sramkova in an hour at the Australian Open.

The five-time Grand Slam champion makes a habit of advancing quickly through the early rounds at the majors. Swiatek has won 12% of her sets in Grand Slams by 6-0, according to the tournament broadcaster.

So when No. 49-ranked Sramkova ended a seven-game losing run by holding serve Thursday, she raised her arm to acknowledge the applause from the Rod Laver Arena crowd. It was one of the few chances Sramkova had to celebrate.

Swiatek has won 27 bagel sets in her major career since making her main draw debut in 2019 — easily the most by any woman in that span (next closest are Coco Gauff and Aryna Sabalenka with nine).

“It was good to play in such an efficient way and just finish it quick,” Swiatek said. “Also, you know, just feel the court and how it is in RLA.”

Swiatek, the No. 2 seed, next faces 2021 US Open champion Emma Raducanu, who recovered from an early break in the second set to hold off Amanda Anisimova 6-3, 7-5.

Raducanu has struggled with injuries since her breakthrough major in 2021, when she became the first qualifier to win a Grand Slam singles title.

She didn’t play a warmup tournament ahead of this year’s Australian Open because of a muscle strain and needed time during her match against Anisimova to get treatment on her back from a trainer.

After advancing beyond the second round for the first time at Melbourne Park, the No. 61-ranked Raducanu was confident she will have enough time to recover ahead of her next challenge against Swiatek.

“It’ll be a very good match for me, another opportunity to test my game,” she said. Swiatek has “achieved so much already. Going into it, I have nothing to lose. I’m just going to swing.”

Swiatek is moving on from the doping infringement which led to her one-month ban last year. And she’s not showing any signs of it being a distraction.

She did everything at pace in the second round, including quick claps of her racket to acknowledge the crowd after her win. Swiatek didn’t face a break point against Sramkova and converted five of the six she had. She finished off points with winners off both wings and also hit some clean volleys on ventures to the net.

She’s feeling slightly less pressure this year, too, after losing the No. 1 ranking to two-time defending Australian Open champion Aryna Sabalenka.

“Yeah, there was a lot of pressure starting the year as No. 1, but I think overall last year I didn’t think about it this much anyway,” she said. “Also, I realized last year that I don’t have 100% influence on what happens with my ranking sometimes. So now I just focus on tennis.”

Swiatek has not lost before the third round of a Slam since the 2019 US Open, a streak of 20 consecutive third-round major appearances. She is chasing her first Australian Open title and sixth Grand Slam championship overall.

American Emma Navarro, a US Open semifinalist last year and seeded in the top eight for the first time at a major, was in trouble after two service breaks early in the third set before she reeled off four straight games to beat Wang Xiyu 6-3, 3-6, 6-4.

Navarro hopped from the baseline toward the net, and made a big, swirling swing of her arm to underline another tough, three-set victory.

“It was really tough the whole time … super tough there at the end,” Navarro said. “Found some good tennis there in the last games.”

Navarro will make a fifth straight third-round appearance at a major; she had never advanced past the second round prior to last year’s Australian Open.

Navarro next plays Ons Jabeur, a three-time Grand Slam runner-up, who struggled with asthma but was still able to hold off Camila Osorio 7-5, 6-3.

“It was very tough to play,” Jabeur said. “I had to not play long rallies. … I tried to manage. Luckily, I was playing really good. That really helped pump me up. If I had lost the first set, it would have been very difficult to continue.”

Sixth-seeded Elena Rybakina, the 2022 Wimbledon champion and runner-up in Australia two years ago, registered her 50th win in a Grand Slam main draw singles match when she beat American qualifier Iva Jovic 6-0, 6-3.

No. 9 Daria Kasatkina also advanced 6-2, 6-0 over Wang Yafan and faces a third-round match against No. 24 Yulia Putintseva, who beat Zhang Shuai 6-2, 6-1.

ESPN Research, The Associated Press and Reuters contributed to this report.