A’s manager Billy Martin flies into a rage and heaves two handfuls of dirt on home plate umpire Terry Cooney’s back after being ejected for arguing ball and strike calls. He will be suspended by American League president Lee MacPhail for 7 days.

On May 29, 1981 — A’s manager Billy Martin flies into a rage and heaves two handfuls of dirt on home plate umpire Terry Cooney’s back after being ejected for arguing ball and strike calls. He will be suspended by American League president Lee MacPhail for 7 days.

Source:
Baseball Reference May 29