Her momentum carried her well wide of the doubles alley as she conjured up a "How did she do that?!" squash-like forehand that looped past Sabalenka and somehow landed in a corner for a victor, drawing raucous appreciation from the crowd at Margaret Court Arena - and an ever-so-slight smile from Anisimova. "I've been idolizing him since the age of 6", Tsitsipas said.
"Roger is a legend of our sport", said Tsitsipas, nearly lost for words.
"Roger is a legend of our sport". It's name you're going to have to know well. John McEnroe figured the moment to be a guard change result.
The long-haired Tsitsipas, seeded 14, has been touted as a future Grand Slam champion and Federer had nothing but praise, saying he saw similarities to himself.
His breakthrough came at last year's Barcelona Open - an ATP 500 event - where he recorded notable wins over Diego Schwartzman, Dominic Thiem and Pablo Carreno Busta on his way to a maiden tour final.
It marks the 11th time Nadal has reached the quarterfinals here. This match straddled generations. "So will I. I think we will see some athletic attacking tennis being played". Tsitsipas does. Tsitsipas did.
I will not say which player. It's not always easy, especially for younger guys.
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Serena has cruised in all six sets this tournament and has just 12 aces, so there's still another level she can reach if needed. Younger players facing an idol like Serena Williams or Maria Sharapova on a grand stage may feel it is a dream come true.
"I mean he has a one handed backhand and I used to have long hair too", Federer joked. "So yeah, a little bit", he remarked.
It's not just that Anisimova, who was born in New Jersey and is based in Florida, has knocked off two seeded players already, including the hard-hitting Sabalenka, who was many a pundit's pick for a deep run at Melbourne Park.
Can Tsitsipas go all the way? He was wonderfully Federer-like.
"I feel confident. That's very important".
Tsitsipas lost a serve after being given a second time violation in the first game, but showed great character to hold and settled quickly after a nervy start.
When he retires, Federer will agree. Although he met Federer, he watched Novak Djokovic in action as the Serb defeated Denis Shapovalov 6-3, 6-4, 4-6, 6-0 to enter the fourth round.
In a match high on spectacular rallies and winners - 123 in total - Federer was left to rue 12 missed break point opportunities as his forehand let him down time and again when it mattered, accounting for 33 of his 55 unforced errors. I have been idolising him since I was six. He's doing a good job to defend them. "Nevertheless, it's very frustrating". Tsitsipas' shoe laces gave up before he did. It was mental. I could have cracked at any minute but I didn't.
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They were rescued from the rubber dinghy after it sank in the Mediterranean and flown by an Italian naval helicopter to Lampedusa. Survivors indicated their fellow migrants came from West African countries, including Nigeria, Ivory Coast and Gambia.
To his credit, Federer played down the controversy in his post-match press conference.
Tsitsipas never even collected a break point of his own until the third set, and the match was almost 3 hours old when he finally cashed one in, the only one he would need, when Federer pushed a forehand into the net.
Point by point, the two men battled with each other in the fourth set.
Hours after the match, Tsitsipas could still not fathom what he had done.
In the men's draw, Roger Federer dispatched one youngster and set his sights on facing another.
"My idol today became pretty much my rival".
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The shift could prevent 10.8 to 11.6 million deaths annually, researchers said. Chan School of Public Health and co-chair of the commission.