MELBOURNE, Australia (AP) — TikTok influencer and top-ranked Aryna Sabalenka is having to work her way through some rising teenager stars in her bid for a third Australian Open title in four years.

Sabalenka held off 19-year-old Vicky Mboko 6-1, 7-6 (1) at Rod Laver Arena on Sunday to advance to a quarterfinal match against 18-year-old Iva Jovic.

The 29-seeded Jovic overwhelmed Yulia Putintseva 6-0, 6-1 in 53 minutes at John Cain Arena, the so-called People's Court, and she secured a spot in the last eight of a Grand Slam for the first time.

Coco Gauff, who was still a teenager when she won her first major title in 2023, is back into the quarterfinals in Australia for the third straight year after a 6-1, 3-6, 6-3 win over No. 19 Karolina Muchova. In a good omen for Gauff, her four previous wins over Muchova have been during runs to the title, including in the semifinals at the 2023 U.S. Open.

In the opening men's match Sunday, No. 1-ranked Carlos Alcaraz continued his bid for a career Grand Slam at age 22 with a 7-6 (6), 6-4, 7-5 win over No. 19-seeded Tommy Paul to reach the quarterfinals for the third consecutive year in Australia.

He's never gone past the last eight at Melbourne Park, the only one of the four Grand Slam venues where he hasn't won the title. That's a statistic he's determined to rectify, to the point where he's reworking his serve to a look a little bit more in style like 10-time Australian Open champion Novak Djokovic.

Djokovic's influence

Jovic has been getting some good advice from Djokovic, a 24-time major winner, during the tournament. He said he's been happy to help an up-and-coming star with Serbian heritage.

Jovic made it clear last year that she wanted a chance to play the World No. 1. Now she'll get the chance.

Sabalenka, who has joked about waiting for a formal invitation to partner Djokovic in mixed doubles at a major, breezed through the first set in 31 minutes against Mboko but had some difficulty in the second.

Mboko saved match points and played well enough to beat many players, but not the two-time Australian Open champion.

“What an incredible player for such a young age,” Sabalenka said of Mboko. “It’s incredible to see these kids coming up on Tour. I can’t believe I say that. I feel like I’m a kid!

“She pushed me so much, and I’m happy to be through,” Sabalenka added in her on-court TV interview.

Sabalenka led the second set 4-1, and then failed to convert three match points while leading 5-4. Mboko slowly took momentum and forced a tiebreaker only for Sabalenka to dominate.

It was the 20th straight tiebreak victory for Sabalenka.

“I try to — not to think this is a tiebreak and play point by point,” said Sabalenka, who won back-to-back titles in Australia in 2023 and ‘24 before losing last year’s final to Madison Keys. “I guess that’s the key to consistency.”

Sabalenka said playing the morning match at Melbourne Park came with some challenges, including shadows and bright sun.

“Don’t get me wrong, I like to play the first match, but the tricky part, at some point the sun goes right into your serve point. It’s kind of like tricky. You can break the serve,” she said. “That’s what actually happened. Two breaks that she got, it was on the side when I was facing the sun. Yeah, I didn’t deal that good with the serve. She did an incredible job serving on that side.”

Jovic and Mboko were scheduled to play doubles together later Sunday on Kia Arena against fourth-seeded Elise Mertens and Zhang Shuai.

Jovic's instincts

After her singles win — when she broke Putintseva's serve six times and led 6-0, 4-0 before she dropped serve herself — Jovic said she'd just concentrate on her own game when she faced Sabalenka.

She saved two break points in the opening game of the match against Putintseva and was dominant throughout. She had her 31-year-old rival chastising herself during the changeovers and practicing shots trying to work out ways to get back into the match.

When Jovic hit a crosscourt forehand winner to convert another break in the second set, Putintseva tossed her racket toward the ball, trying to make a connection.

As for taking on Sabalenka, Jovic said, “Obviously, she's No. 1 for a reason and had so much success at this tournament. But that's what I want — I said it last year, I hope to be able to play her this year, because you definitely want to play the best and see how it goes."”

___

More AP tennis: https://apnews.com/hub/tennis