The serve, obviously, will be crucial for both. Probably more so for Fritz, because Alcaraz is the better player once the points get started. That said, Fritz doesn’t have a glaring weakness from the ground where Alcaraz can go. I’d expect to see the No. 2 seed try to get the American on the move with his drop shots.

Alcaraz’s level is another question mark. As great as he is, and as unbeatable as he can look, he has off days—or at least off sets. That’s one reason he has been so successful in best-of-five; the format gives him time to come out of a funk. But a roller-coaster performance from Alcaraz against Fritz would likely be much more dangerous than the one he went on against Fognini in the first round.

“I think it would be dumb of me to say that grass isn’t my best surface,” Fritz says.

Fritz is right to be happy that this match is on grass, rather than clay. But Alcaraz’s two Wimbledon titles are a pretty good indication that he can play on the stuff, too. Winner: Alcaraz