Continuity mistake: When Vinny, Tyrone and Sol are waiting to rob the bookies and the dog starts barking and biting Sol he is already reaching for the squeaky toy and even says "here", but when the camera cuts to Vinny and he tells Sol to give the dog the toy, they show Sol reaching for the toy again.
Continuity mistake: In the scene where Bad Boy Lincoln is trying to sell a fake diamond to Sol, notice the security monitor to the left, in one shot you see his hands down, and in the next shot he is rubbing his head. Now in the next shot on the security monitor he his rubbing his eyebrow, then in the next shot his hands are down. (00:23:18)
Continuity mistake: During the final fight scene, the trainers from both sides run into the ring and have a scuffle, Mickey is on the ground recovering. Tommy and Turkish are in the ring fighting with the other trainers. Turkish helps Mickey back to his corner and Tommy has magically teleported from the inside of the ring to the outside of the ring helping them.
Continuity mistake: When Bullet Tooth Tony is shooting at Boris in the hallway, notice the second shot he takes - no muzzle flash. All of the other shots have one.
Continuity mistake: In the scene when Turkish and Tommy are talking to Mickey before one of his fights, he doesn't have a cigarette, the camera moves onto someone else for a split second, then moves back, and Mickey has a lit cigarette in his mouth. He is wearing boxing gloves, so couldn't have held it beforehand.
Continuity mistake: When Cousin Avi, Tony, and the big henchman are driving after bagging Boris, the big henchman is playing with a knife while they talk about killing Boris. The next time we see the henchman he is holding a sabre of sorts across his torso. After they crash, the sabre is going directly into his chest. This would not have happened unless at some point he held the sabre with the tip directly towards him.
Continuity mistake: Before Boris shoots Frankie Four Fingers, he reaches for his gun, then from the different angle he is still fiddling with his earplugs, not having yet reached for the gun. Then back to the original camera angle where the gun is in Boris' hand ready to shoot.
Continuity mistake: At the campsite when Mickey's mum stops the fight and gets led back inside the caravan, in one shot she is facing the right side of the doorway and in the next she is facing the left. (00:19:10)
Continuity mistake: When Vince and Sol rob the bookies, you see Sol wipe himself off twice, on his right leg. But, when Bricktop and his henchmen are watching the video later, he wipes himself about four times, differently than before.
Continuity mistake: When Boris gets hit by the car we see it twice from different perspectives, but twice from inside the car that hits him. The way his body goes over the front of the car is completely different in both shots.