If tennis had analytics like in baseball, maybe tennis players would hit two first serves.

Take a couple of examples - Example A: if you hit 65% first serves and win 65% of points while you win only 40% of second serve points, you’ll win 56% of total points. If you hit first serves only and double fault only 10% of the time, you would win 59% of points.

Example B: If you hit 60% first serves and win 60% of points while winning 40% of second serve points, you would win only 52% of points. If you hit all first serves and double fault 10% of the time, you would win 54% of points.

Example A might be comparable to pro match stats and Example B might reflect 4.0 to 4.5 level rec tennis. In both cases, the numbers favor hitting two first serves If you doublefault only 10% of the time while hitting only first serves. Even if you double faulted 20% of the time, your % of winning points might not be that different from hitting a second serve. The point patterns will be better and you will probably have more fun playing the points as the server if you hit two first serves. So, maybe the players that

@zaph complains about know something that he doesn’t and are having more fun.