Fully deserved. Future superstar.... from a die hard Federer fan 👏👍

I love Federer, but this kid is GOOD! Great win, well deserved :D

I am a huge fan of Federer, and sad that he lost. But I'm also really happy for Tsitsipas....he has a very bright future ahead of him. Definitely could be some grand slams in his future.

This match was very eerily similar to when Federer beat Pete Sampras when he was a youngster! Tsitsipas will likely face Nadal in semi finals and I just can't wait to see what happens.

I love this guy. ..sooo emotional. .. Great fighter, mature. ..making his dreams come true. . A real exemple for this new gen.

Congrats! Future of tennis

man i'm telling you this kid is coming man, been a fan of his game since his barcelona run last year. his biggest asset is not his game but his temperament, kid's just got ice in his vein, and I haven't seen him really fazed in a match so far in his career. he doesn't get too mad or too excited, just always got a calm and chill vibe to him on and off the court, sorta reminded me of borg (not because of the hair). Man after that 1st set's set point when the crowd called his ball out and he just kept his composure and moved on, that's the rarest gift to have in tennis, and I was like this one's different from the rest

Love the humility of this young player.... fully deserved... meanwhile Roger fans are figuring out how to pronounce this Hellenic title!!!

This is a bittersweet moment. I am a diehard Federer fan, so of course a defeat like this stings, it also doesn´t help that we didn´t see him at his best. However, I fully believe Stefanos deserved this one and am overjoyed to see a player like him (stylish, talented, tactical, etc.) get such an important win. I´m sad because my favorite player lost, and yet I feel happy for the future.

So proud! Bravo Stefanos the Great!!!

Συγχαρητήρια Στέφανε, μας έκανες υπερήφανους!!! 🇬🇷🇬🇷🇬🇷🇬🇷

It's good to know that all of us federer fans will have a player to look forward to after federer retires. The future of tennis is definitely in good hands.

Congraj The Future Champion.. Very Nice game Respect to The Legend 💪🏻

Wow, what a smart talking. I think this young man did his research very well and took the very best from legends of tennis and now he actually showed it to the world. I hope there will be more Tsitsipases in the future.

Stefanos, Now go on and win the whole thing!

I regrettably missed the game but made it for the MaC-interview.. then OMG.. a Spartan was born!! A new player with great PerSonaLity.. Mental focus to Seek&Destroy.. so innocently! Despite never seeing a single shot of his.. that interview.. This man will go FAR

The future is in good hands, Stefanos, Coric, Tiafoe, Zverev all new kids on the block and still in the tournament

Stefanos was just too good 🇬🇷

He is good at the net. Terrific victory. He seems to have the focus to become a great champion of tennis.

Είσαι τεράστιος , σε μια δύσκολη μέρα για την πατρίδα , μας έκανες όλους περήφανους #proudtobeGreek

Damn that kid has got potential. Surely the future of tennis! Played phenomenal tennis today. 👍

The next big one! Tsitsipas! I just hope he is lucky! No injuries for example. He ‘s got everything else needed. And he is Greek! Born to be a fighter!

McEnroe - 'I don't know where to begin.' I know where to begin. John, mate, he looks just like your nemesis Borg.

Very promising future for this young player. Much respect for Roger though

This guy is here for good.

New generation coming up! Congrats Tsitsipas!

Amazing victory. This is the start of the next gen

This kid is seriously something special

Τιτανομέγιστος Στέφανος. Μας έχει τρελάνει!!!

Huge Federer fan, but this guy is one to watch - very dynamic and agressive style, single backhand, volleys, cuts, very good to watch

I love humble players. Much respect to you... you can be the next star player

Congrats, Stefanos! 👍

Incredible match!!!!

a new legend born !! Stefanos Tsitsipas

Federer lost this match when he blew the second set. He played the better tennis throughout the entire set serving well and creating 8 break points then crumbled in the tiebreak.

This kid is the future of tennis!

Its gonna be djokovic v tsitsipas in final! Tsitsipas is true heir to roger's throne. He shares a lot of similarities with roger.

Hope this guy goes on to win it

What a sweet man.

Well done Tsitsipas,you were the better player today 👌

Congratulations it's your time in the sun .👏👏👏

Roger is a legend,,,Greek gods never die..

all these Federer fans. stop giving the Greece dude shit. he even gave Federer credit and he did awesome. you deserve it man

Well deserved win !!!

Great win for Tsitsipas.Backing Nadal to win the title. He was just looking so sharp against Berdych. His serve has improved tremendously as well

Happiest and so are we for you ... #teamfederer ✅

Μπράβο αγόρι μου !! Εύχομαι απο καρδιάς να το σηκώσεις !!

Good!!

Fritz looked like he lost before the first point. This kid has the mindset.

Ts ts ts ts is amazing

Tsitsipas will be1st to win GS among all NexGen including Alexander, Thiem, Khachanov, Medevedev... I'll say at least 8+ GS. Just unbelievable pace of improvement!! 6'4" moves like 6' guys, Mentally very strong for 20 yr old very mature.

He is not a good ambassador for his shoe sponsor，but this guy has bright future

Это было круто! Заслуженно 💪🔥

SUPERRRR.STARRRRR..

I want him to do so well in the future gaaaahhhh 💖💖

future single backhand legend.

Stefane we are very proud of you on this special day for our MACEDONIA!

So the AO champ is here🙌🏻

The 2nd straight year the NextGen Champion scores the upset of the tournament. Last year it was Chung over Djokovic but this was more impressive since Djoker was still coming back from his long layoff.

Now adidas tennis's future is bright... It has Zverev, Tsitsipas, Thiem etc..

One handed backhand on the comeback trail!!!

congratulations, amazing match, well deserved Stefanos even though I am a Roger fun

Είσαι μεγάλη παιχτουρα που λένε και στο ποδόσφαιρο!!!! Μπράβο!!!

Kyrgios would of been watching this game and wished that was him beating federer LOL

Rafa now is smiling and smelling the Title.

Good for him! Takes such strong mentality to get a win off of Roger.

Go all the way

Very sympathetic pal 😁

One of the biggest upsets in Australian open history.

Stefanos played his heart out and believed he could , really well played , not even talking about the 17 yr age difference and these players should be destroying players like the great Roger but the score line doesn’t seem so , the matter of the fact these next gen players seem only seasonal , only to have beaten top ranked players having a good day and a good game until the quarters and when it really matters , they don’t deliver , for instance everyone is talking about Tsitsipas and being compared to the match in 2001 (Fed vs Pistol Pete) , I mean cmon if you have to beat the Goat , you need to go on and win a grand slam and then talk , also if you happen to win , there needs to be consistency shown at the highest level at least if not winning , making it to the semis or finals in each grand slam where most of the next gen players crash out before the round of 16 , Juan del Porto is lethal no doubt but after wining 2009 we haven’t seen him maintaining that dominance like the big 3(Andy Murray was never in their league, not sure why was it called the big 4) , so these next gen players are seasonal , they come and go just like Grigor Dimitrov was the next big thing few years ago but failed to win any major, by now he should have at least won 1, there have been others too such as Thiem, Shapovalov, Khachanov,Coric , Zverev,but none perform when its required the most to raise their games,only way for the next gen players to probably win is when the big 3 retire, to close it up in the words of Roger ‘ Novak is right there at the top , Rafa is protecting the clay(well I would say at times the hard courts as well) and I sometimes give them a hard time too ‘

Μπράβο Στεφανάρα

Greek soul

If you beat Federer , you are already a winner...he is awestruck...

Well...there goes my racquet bracket!

Seems like a nice guy stoked for him . Hated johns last comment though until these new guys consistently contest for the biggest prizes and win a few in the process of doing so then maybe you could say changing of the guard

He’s going to win AO 2021 now ❤️❤️❤️

He had beat the giant in 4th sets congrat !!

Wonderful match fully diserved;how old is he??

This kid could do some great things in the near future. My only gripe is that he should have been placed in the QF to face Federer. Then Roger wouldn’t lose as many points. I’ll be observing him.

Nadal: "Anyway,what happened to you Roger? Did you got beaten up by this guy?" Federer: "Um nooo.I just..umm.." Djokovic: (you've got caught by your age) Federer "*I GOT CAUGHT BY MY AGE*"

I don't believe he's getting past Rafa. but great win for bis experience.

Haters now eat...a tzatziki dip!!

I love the fact that some of these young players are up and coming and are challenging the stalwarts of the game. It is inevitable, and die hard Roger fans will need to get used to disappointments more and more as the years roll by. But can people please stop comparing Tsitsipas to Roger as though they are equals. Someone even had the nerve to call Tsitsipas GOAT. Yes he has potential, yes he may go on to win many slams, but comment on his style, comment on his attitude, compare his potential at the same age. But, Dkovich, Nadal, Zverev, Kyrgios etc have all beaten Roger in recent memory, and this kid still has a loooonnnngg way to go to prove himself , before he can reasonably be compared to Roger as a player...... P.S. Aus Open organisers, Please keep John away from the wine, or stop letting him interview players.

He played good, but I don't see him wining a grand slam this year.

Bravo Tsisipas ! You were just great and I wish you to win Nadal! Godd luck Kid! Tou should teach a bit Shapovalov, less selfies and to be more serious and have fun like you do!!!

Awww he wants to cry

This damn guy

Federer fans I had predicted this 3 months back and again last evening. More of the same for the rest of the year. Roger in his days used to be goat.

Tsitsipas : “I have to say I’m really inspired by you” McEnroe: “Thanks for lying” 😂😂😂

and now 4 years later he made the final but fell short to the Djoker! Hopefully his day will come one day once the errors and backhands gets worked on!

Hmm something looks familiar... Remember 2001 Wimbledon 4th Round?

Wow

Thanks for all Roger. Next Target: Wimbledon

Changing of the guards? What an insult. I ain’t going nowhere.

HELLAS is the word!

Time catches up with everybody. Roger needs to go out at the top... or near it. He should not go on too long, or his legacy will be tarnished by mugs who wouldn't have lived with him at his peak...

Yes he is the future with Alexander Zverev

Jim Courier is so much better doing on court interview than McEnroe

u should see his face after he meet nadal next day.

How do you say VAMOS! in Greek?!?!?!