Continuity mistake: When they are playing hockey, and they win with 1-0 you can see the team celebrate. In the background you can see a scoreboard that says 4-1.
Other mistake: In the scene where Marlon Wayans is in the store after getting his clothes taken by the homeless guy, he goes in the suit store and he is supposed to be naked, but you can see the side of the black underwear that he has on when he faces the salesman.
Continuity mistake: When Wayans is at his second hockey tryout after the drugs start working, the players line up and practice slapshots. If you watch closely, when Wayans is in the middle of his act his goalie stick disappears and he is saving them with his glove, and then at the end when Lillard comes to celebrate with him his stick appears again.