Looks like the new era is finally being ushered in. Would have put good money on Djokovic winning this, but then of course he didn't play any build up tournaments, IIRC either did Alcaraz after the Olympics, so that might have hurt them.
Previously Novak would have been good enough to walk into the second week even being out of practice or a little off. Seems not anymore. Last year's Cincinnati really helped him that year. All that being said, Popyrin has given him a scare before.
I wonder if this could finally be Zverev's year. The Men's draw is wide open now. Though I still think the women's is where the real action is.