I completely agree. Might be a tad hyperbolic but it's the best match I can remember watching that didn't involve one of Fed/Nadal/Novak...
I mean, I actually think that's not hyperbolic enough. I really would like to watch it s a second time to confirm my impressions, but I wrote on FB that "I have been watching tennis since I was a kid, the days of Borg and McEnroe and Connors, and that might have been the single best match I've ever seen." Here are some reasons I think I stand by that:
1) Lead changes. Neither player could ever break free of the other, Alcaraz won the first set, Sinner the next two, Alcaraz the final two. Within the individual sets:
Alcaraz had five set points in the second set (he lost it).
Alcaraz served for the third set (he lost it).
Sinner served for the match in the fourth set and had a match point (he lost it).
And Sinner was up early in both the 1st and 5th sets before losing both.
2) The serving numbers for both players didn't look great, but I think that was almost entirely a function of how good both players were at returning (and hitting every other shot after that). By comparison, last night against Tiafoe, Alcaraz won his first 15 service games, not broken until set 4, and he broke Tiafoe I think 8 times after Tiafoe went 34-2 in service games vs Nadal and Rublev.
3) Because there were not many easy points won on either player's serve, the points tended to be more hardfought on average, which is why the match lasted over 5 hours despite both players hitting the ball as hard as they could almost every shot.
4) These two bring out the best in each other, already an intense rivalry with Sinner at 21 and Alcaraz at 19. Sinner knocked Alcaraz out of Wimbledon and he came really really close to doing so here too.
5) Fed/Nadal/Novak are clearly the best three players of all time, but if Alcaraz wins tomorrow, he will be the world #1 at a younger age than all of them (or anyone else, youngest men's #1 ever if he beats Ruud).
6) We have seen countless incredible matches between the big 3 but this one just seemed to start in 5th gear and go that way for 5 plus hours. Most great matches have easy service games along the way, this one had very few of those, it seemed like the server was down 0-40 as often as they were up 40-0.