Points won by each set: [ 21-29, 44-42, 36-33 ]
Points won directly behind the serve:
25 % Tsitsipas – 31 of 120
32 % Zverev – 28 of 85
A victory of this kind, coming back from a huge deficit to win two tight sets usually happens only once in career (if happens at all), so it’s even more valuable for Tsitsipas  given the quality of his opponent. For now they both seem to be potentially the best players born in the 90s, I’m curious how this match may affect their future encounters (I expect many)… It was their second meeting, and Zverev  was on his way to almost copy the first one, which he won a week before in Washington 6-2, 6-4. In Canada, The German led 6-3, 4:1* (30/0) when played very bad drop-shot from a position he could do many things to create a triple break point. Later on he led 5:2, but when served at 5:3 Tsitsipas delivered his best tennis on that day to break back. The Greek notched his first volley winner at *5:6 (15/30) and took the tie-break 13/11 withstanding two match points: at 5:6* survived a 21-stroke rally, at *8:9 Zverev netted his backhand off average 2nd serve. Immediately after losing the tie-break, Zverev devastated his racquet. Nevertheless in the 3rd set he led with a break 3:2, then at 4-all he squandered three mini-match points (Tsitsipas’ overhead, FH winner – semi passing-shot in 25-stroke rally & service winner). It was too much for Zverev; admittedly he led 30/0 in the following game, but looked discouraged, and at 30/15 he didn’t take challenge to his forehand which was good, so instead of “40/15” the chair umpire said “30-all”. Zverev ended the 2-hour 28-minute quarterfinal as he committed double fault on Tsitsipas’ first match point.