The 21 year-old German - latest coaching project of the gnarled old Czech - came up with the ideal response when produced a remarkably authoritative display to see off Novak Djokovic and win the Nitto ATP Finals at a packed 02 Arena.
To come back after a hard start to the year and an injury to win Wimbledon and the US Open this year, and become the dominant player in the second half of the year, speaks volumes for his mentality and love for the game. I appreciate you letting me win one today'.
"I mean I wasn't done yet but thanks for the champagne", a bemused Zverev, who is only just old enough to legally take a swig of the champers in some countries, told the crowd at London's O2 Arena, to laughter. Let's not go there for now.
As his former coach, it is wonderful for me to see that because he obviously still has a lot of good tennis in him.
The rising star got to the final by defeating Swiss great Roger Federer 7-5, 7-6 (7-5) on Saturday, reports Efe news.
The world No 1 has progressed to the final without dropping a set or even losing his serve and is seen as a strong favourite to cap his brilliant second half to the season with a fifth title.
Zverev duly took the set, in which he had landed 21 out of his 24 first serves into court, firing down seven aces in the process, and the world's best player was rattled. 'Hopefully he can surpass me.
He is a curious 21-year-old, he walks through life with an open mind and an open perspective.
While Zverev held his nerve to seal the match in the second itself, he was not that calm when it came to the post-match interview.
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In addition, the over 9.5 game line for the first set is 5/6 with the Sportsbook, and perhaps this is a little more tempting.
In press conference at the ATP Finals after his loss to Alexander Zverev Novak Djokovic admitted he was not at his best in the final match and overall the tournament. But having broken to go 3-2 up in the second, Zverev was finally able to consolidate it by holding the following game and opened a 4-2 lead over the world number one.
The Serb then won the Cincinnati Masters for the first time to become the first singles player to win all nine ATP Masters 1000 titles and he maintained his form with a determined display at Flushing Meadows to secure back-to-back major titles.
The tall South African was disappointed with his own showing in Djokovic's 6-2 6-2 victory in the semi-finals of the Nitto ATP Finals.
Federer said the ballboy had confirmed to him that he had dropped the ball. "But I don't think he was close to his best".
From there he remained solid on serve, before ending with a flourish.
He struck 20 winners to Djokovic's seven - the last of which was a backhand to end a one hour and 19 minute duel. "This trophy means a lot, everything, to all the players". "You only have so many chances of winning it".
"You definitely played much better than you have in the group stage. It disturbed Sascha", Djokovic said. I'm not going to lie.
After a couple of years finding his feet and learning to deal with huge expectation levels, however, Zverev's Tour-leading 58 match wins this year is proof of a more mature attitude, and a greater level of consistency.