Team India ended their Australian sojourn in ideal fashion as they trumped the hosts by 7 wickets in the third and final one-day global at Melbourne to win the three-match series 2-1, their first ever bilateral series win down under.
"You're watching the changing of the guard!" said veteran tennis champ John McEnroe. "I am the happiest man on earth right now, I can not describe it", an emotional Tsitsipas told John McEnroe in his on-court interview, while clutching his shoulder-length mane in disbelief. Get first serves in, didn't lose patience.
I see him definitely being high up in the game for a long time.. "This is something that I was dreaming as a kid".
It came to a head at 6-5 down, with Federer's first serve going missing in four successive points and the set lost with a trio of unforced errors on forehand.
To his credit, Federer played down the controversy in his post-match press conference.
He saved eight break points in the second set to keep Federer at bay yet had no such gifts on his opponent's serve. And why are Greeks making so much noise about him? Tsitsipas went 1-for-3 in that category, coming through in the last game of the third set.
The last time the players met here in 2015, Berdych beat the Spaniard in straight sets to end a 17-match losing streak against Nadal. At this point, Federer began to lose some of his drive.
When it was all said and done and the crowd stood up to acknowledge the legend of Federer goodbye, Tsitsipas stood on his bench staring wide-eyed at the scoreboard that read 6-7, 7-6, 7-5, 7-6. Increasingly Tsitsipas was working harder on his serve than Federer, his service games were running to nearly double the points of Federer's.
Federer made a blistering start, his break in the third game set up by a blistering backhand cross-court pass.
Tsitsipas trains at the Patrick Mouratoglou Academy in Nice, where among others, he has trained with Serena Williams.
"I was just serving well", Tsitsipas said.
A star is born!