Other mistake: When Downtown is in the manager's office receiving his punishment (being benched), as he leaves he slams the door on the cinderblock wall. If you look closely, you can see the cinderblock wall sway. (00:26:34)
Other mistake: When the Buzz play the Twins for the first time at the Metrodome in Minnesota, Taka throws the ball from the outfield, into the infield. When he throws, you can see a yellowish, brownish outline around his body which indicates that he is standing in front of a green/blue screen.