On February 9, 1920, the major leagues announce a rule change banning all “freak deliveries” by pitchers. The new rule outlaws pitchers from using grease, saliva, sandpaper, and other foreign substances on baseballs, except for 17 known “spitball” pitchers. They will be allowed to use the outlawed substances until their careers end.
April 13, 1970
Cincinnati Reds secondbaseman Johnny Temple in a game against the Braves allows a groundball by Gus Bell hit him to prevent a double play.
April 20, 1957
December 10, 1972