It's safe to say rookie Yermin Mercedes learned not to break an unwritten rule of baseball around Tony La Russa, even if the play would be record breaking.
The White Sox were up late in the game, 15–4 in the ninth, and Minnesota had utilityman Willians Astudillo pitching. By the time Mercedes stepped up to bat, Astudillo was 3-0.
The unwritten rule is that you shouldn't swing on a 3-0 pitch when your team is up late in the game, especially when a position player is pitching. But, the rookie couldn't resist slammed the 47.