Australian Open 2021: Dominic Thiem stunned by Grigor Dimitrov; Serena Williams, Naomi Osaka survive

A fatigued-looking Thiem, coming off a five-set win over Australia's Nick Kyrgios, slumped in straight sets to Bulgaria's Grigor Dimitrov who took it 6-4, 6-4, 6-0 in just over two hours.

The Associated Press February 14, 2021 14:00:16 IST
Australian Open 2021: Dominic Thiem stunned by Grigor Dimitrov; Serena Williams, Naomi Osaka survive

Grigor Dimitrov (R) stunned reigning US Open champion Dominic Thiem in the fourth round of Australian Open. AP

Melbourne: US Open champion Dominic Thiem became the first major men's casualty of the Australian Open on Sunday, as Naomi Osaka and Serena Williams survived scares to reach the quarter-finals.

Elsewhere, US Open finalist Alexander Zverev beat No 23-seeded Dusan Lajovic 6-4, 7-6 (5), 6-3 to move into the quarter-finals.

The sixth-seeded Zverev, a semi-finalist in Australia last year, will next play the winner of Sunday's later match between top-ranked Novak Djokovic and No 14 Milos Raonic.

A fatigued-looking Thiem, coming off a five-set win over Australia's Nick Kyrgios, slumped in straight sets to Bulgaria's Grigor Dimitrov who took it 6-4, 6-4, 6-0 in just over two hours.

Dimitrov's victory against Thiem, the third seed and last year's runner-up, sets up a quarter-final with surprise package Aslan Karatsev, who is into the last eight on his Grand Slam debut.

"Whether it's a fairytale or not, it's a match and you've got to be ready," Bulgaria's Dimitrov said of the unheralded Russian.

"I've seen a little bit of his matches, clearly he's a dangerous player."

Australian Open 2021 Dominic Thiem stunned by Grigor Dimitrov Serena Williams Naomi Osaka survive

Serena Williams saw off a spirited big hitter in Aryna Sabalenka to move into the Australian Open quarters. AP

Earlier in the day, Williams tumbled to the ground, her heavily taped right ankle turning, her body contorting, her racket flying.

This was early in the second set of a competitive-as-can-be matchup in the Australian Open's fourth round against a younger version of herself — stinging serves, huge groundstroke cuts, a fierce streak — and during a stretch Sunday when things seemed to be slipping away.

Williams quickly put up a hand to indicate she was OK, retied the laces of her right shoe and, while it took her a bit to regain control, she did so, just in the nick of time. Grabbing the last two games, Williams pulled out 6-4, 2-6, 6-4 victory over No. 7 seed Aryna Sabalenka to reach the quarterfinals at Melbourne Park.

Two years ago at this tournament, Williams was on the verge of a quarterfinal win when she hurt her ankle and ended up losing.

"Well, my first thought was, 'Not another ankle sprain in Australia.' But I knew immediately that it wasn't. Then I was more embarrassed than anything. I was like, 'Oh, my goodness.' I don't like falling," Williams said. "But I was fine. I mean, once I realised I didn't twist my ankle, like at all, I was like, 'OK, I'm good, let me just get up.'"

Williams, who wore a black T-shirt with "Unstoppable Queen" in capital gold letters to her news conference, moved closer to an eighth Australian Open championship and record-tying 24th Grand Slam singles title overall.

Her most recent came in 2017, while she was pregnant.

On a cloudy day with the temperature in the mid-60s Fahrenheit (high teens Celsius), both Williams and Sabalenka dismissed much in the way of subtlety or nuance.

"I was OK with it, really," Williams said. "If she wants to play power, let's go."

These two hit the ball hard, over and over again in Rod Laver Arena, and Williams was barely better. She ended up with more winners, 30-24, and more aces, 9-4, while cranking up her best-in-the-game serve to as fast as 126 mph (202 kph).

When Williams needed to volley, she did, rather well, claiming 13 of 15 points when she went to the net. More importantly, she covered the court much in the way she did in her younger days, when opponents' apparent winners were rendered mere fodder for her own strikes.

And she showed no signs of trouble from the left Achilles tendon that hampered her in a US Open semifinal loss in September and forced her to withdraw from the French Open before the second round later that month.

"I've worked really hard on my movement. Yeah, I like retrieving balls. I mean, obviously I like to be on the offense, but I can play defense really well, as well," the 39-year-old American said. "I didn't think about my Achilles. It's so good to not think about it. Oh, my goodness."

Sabalenka — a 22-year-old from Belarus playing in only her second fourth-round Slam match — was visibly and audibly frustrated. She frequently would scream after lost points. She spiked her racket, too.

With the high quality of the match, the only shame was that no fans were there to see it in person. That's because this was Day 2 of the five-day lockdown imposed by the Victoria state government after some COVID-19 cases emerged at a local hotel. (Any cheering or chatter TV viewers heard at home was being piped in to broadcasters' feeds).

Williams now faces Simona Halep or Iga Swiatek, who were scheduled to meet Sunday night. The other quarterfinal on that half of the draw will be Naomi Osaka against unseeded 35-year-old Hsie Su-wei of Taiwan.

On the men's side, there was more unexpected news: Dimitrov's next opponent is Aslan Karatsev, a 27-year-old Russian qualifier who is ranked 114th and first player in a quarter century to reach the quarterfinals in his Grand Slam debut. Karatsev eliminated 20th-seeded Felix Auger-Aliassime 3-6, 1-6, 6-3, 6-3, 6-4.

Australian Open 2021 Dominic Thiem stunned by Grigor Dimitrov Serena Williams Naomi Osaka survive

Naomi Osaka came from a set down to beat Garbine Muguruza. AP

Osaka barely advanced, saving two match points and grabbing the last four games to top Garbiñe Muguruza 4-6, 6-4, 7-5.

The third-seeded Osaka returns to the quarterfinals of a tournament she won in 2019 for one of her three major trophies. Osaka ran her winning streak to 18 matches — a run that included a US Open title in September.

"She's playing great. Big shots, big serve," Muguruza said. "That gives her a lot of free points."

The key moment came when Osaka was serving at 15-40 while trailing 5-3 in the final set. Muguruza could not convert either chance to end things: Osaka delivered one of her 11 aces at 118 mph (191 kph) on the first; Muguruza missed a groundstroke on the second.

Fifteen minutes later, the match was over.

The 71st-ranked Hsieh's 6-4, 6-2 victory over 2019 French Open finalist Marketa Vondrousova made her the oldest woman to make her major quarterfinal debut in the professional era.

This is the 38th major for Hsieh, who beat 2019 US Open champion Bianca Andreescu in the second round.

The secret to Hsieh's success?

"I try to pretend," she joked, "I'm only 18 years old."

(With inputs from AFP)

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