Continuity mistake: In the early scene in the bar, Ed Burns' shirt is splattered with blood. A few minutes later they flashback to the same scene as he is explaining the con to us. The blood on his shirt is a completely different splatter pattern.
Revealing mistake: In the scene where the fed's cars drive in to arrest the two crooked cops, there are tyre marks on the tarmac, right hand side of the screen, probably left there from a previous take. (01:24:30)