Continuity mistake: When Yankee goes into his bedroom after losing the baseball game in the sandlot, he tears a hand-drawn picture of himself, Babe Ruth and his dad off the wall. The pieces of the picture fall on the bedroom floor. A few shots later the pieces are missing. Yankee was the only one in the room, and he didn't move them. Plus the window is closed, so it couldn't have been wind.
Continuity mistake: When the cops come into the Irvin's house, the man that is skinnier than the other, his suit changes color from blue to white in some shots.