Stefanos Tsitsipas managed to stun defending champion Roger Federer in 4 sets. There were no end of upsets today and Federer was the latest casualty. Federer clinched the opening set in a tie break before Tsitsipas came to life and took the next three.
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Here is how Twitter reacted to the shock defeat.
He's done it!@StefTsitsipas knocks out defending champion Roger Federer 6-7(11) 7-6(3) 7-5 7-6(5) to reach his first quarterfinal at a Grand Slam.#AusOpen #AOFiredUp pic.twitter.com/Vz8sQa0AT1
— #AusOpen (@AustralianOpen) January 20, 2019
What an effort!
Please don't forget us @rogerfederer! 😊#AusOpen pic.twitter.com/ttj97ebHDI
— #AusOpen (@AustralianOpen) January 20, 2019
Roger Federer is OUT of the Australian Open.
20-year-old Stefanos Tsitsipas is in the quarter-finals.
REACTION 👉 https://t.co/h9jMetqsdV #bbctennis #AusOpen pic.twitter.com/gzeUxwp2cf
— BBC Tennis (@bbctennis) January 20, 2019
HE"S DONE IT!!!
Stefanos #Tsitsipas beats Roger #Federer 6-7 7-6 7-5 7-6 to move into the quarter finals of the #AusOpen!
He was sensational!
A STAR INDEED IS BORN!!! pic.twitter.com/4e6tJB7SdP
— Live Tennis (@livetennis) January 20, 2019
Roger Federer is out of the Australian Open.
It's the biggest win of his career for the Greek 14th seed Stefanos Tsitsipas.
Read all about it
👉 https://t.co/rbrXCXU3Ym pic.twitter.com/EMzkA1Ujki— BBC Sport (@BBCSport) January 20, 2019
A stunner Down Under 😮
20 y/o @StefTsitsipas knocks out defending champion Roger Federer 6-7 7-6 7-5 7-6 for the biggest win of his young career 👏#AusOpenpic.twitter.com/jVtejAu24R
— Tennis TV (@TennisTV) January 20, 2019
"I'm the happiest man on earth right now." 🇬🇷👏@StefTsitsipas scores a sensational 6-7(11), 7-6(3), 7-5, 7-6(5) win over Roger Federer in R4 of the #AusOpen! Say 👋 to your first Grand Slam QF, Stefanos…
📸: #USOpen pic.twitter.com/9AvhAw9G7Y
— US Open Tennis (@usopen) January 20, 2019
BREAKING: Defending champion @rogerfederer is out of the @AustralianOpen after being beaten 6-7 7-6 7-5 7-6 by 20-year-old @StefTsitsipas. #SSN pic.twitter.com/ceInKjg1Yi
— Sky Sports News (@SkySportsNews) January 20, 2019
.@StefTsitsipas has been idolising Roger Federer since the age of six.
At 20-years-old, he's speechless 😶#AusOpen pic.twitter.com/VOe2cfhzP0
— #AusOpen (@AustralianOpen) January 20, 2019