I can never figure out why people get so upset about a clock in baseball. The rule below definitely put a clock into the game in 1955.
8.04 When a base is occupied, a pitcher must deliver the pitch within twenty seconds of receiving it from the catcher. If he fails to do so, the umpire may call a ball.
I couldn’t find out when 8.04 changed to the following.
[8.04 When the bases are unoccupied, the pitcher shall deliver the ball to the batter within 12 seconds after he receives the ball. Each time the pitcher delays the game by violating this rule, the umpire shall call “Ball.”
The 12-second timing starts when the pitcher is in possession of the ball and the batter is in the box, alert to the pitcher. The timing stops when the pitcher releases the ball.
The intent of this rule is to avoid unnecessary delays. The umpire shall insist that the catcher return the ball promptly to the pitcher, and that the pitcher take his position on the rubber promptly. Obvious delay by the pitcher should instantly be penalized by the umpire.
My kid was a fast tempo pitcher too, but that didn’t stop any batter from trying to break up that tempo. Heck, when I was a kid back in the 50’s we knew that if a pitcher was allowed to get in a “groove” he could be a lot of trouble, so we learned ways to counteract that without a clock.