The Boston Celtics hired a chess prodigy to help them with the mental aspects of basketball. Joe Mazzulla playing chess not checkers ♟️🏀 #NBA #bostonceltics #celtics #nbaplayoffs #playoffs #jaysontatum #jaylenbrown #chess #basketball #joemazzulla #knicks #knicksvsceltics #sports #story #storytime #storytelling #mindgames