Continuity mistake: When the Tea Totaller is bowling against the Gas House Gorillas, the Gorillas are seen striking the ball with their baseball bats, but when we see the Gorillas in a conga line, there are no bats in sight.
Other mistake: At the start of the baseball game, the announcer says that the Gas House Gorillas are the visiting team, yet on the scoreboard they are shown above the Tea Totallers.
Continuity mistake: When one of the Gas House Gorillas takes the plate umpire's place during the game, you can see that the fence behind him has nothing on top of it, but when he calls Bugs out, a net has appeared.
Audio problem: When Bugs says "That's the old ginger, boy!" when practising with his baseball bat, his mouth doesn't move.