Soon afterwards, a rule specified that umpires would clean home plate with a whisk broom and store it in their pocket when not in use. On April 26, 1905, McCarthy is the first fielder to throw out three base runners at home plate, achieving the feat against the Pittsburgh Pirates.
This led to an additional rule specifying that umpires would sweep home plate with a whisk broom and keep it in their pocket when not in use. On April 26, 1905, McCarthy accomplished something remarkable by throwing out three base runners at home plate against the Pittsburgh Pirates.