In final fight scene when bad guys entered red car and closed door, in the background man on the right side of screen changed position in a wink.
When bad guys exits ruined red car, it stands parallel to garage with white car parked in the background. In next shot red car is in completely different place.
Very obvious stunt double when Hannibal jumps off the makeshift tank/snow shoveler.
When Murdock shoots cannon at basket to basketball, first a fireball emerges from behind the basket, yet it shatters about half second later.