Factual error: When Dicky (Christian Bale) is cheering to the guards after Micky (Wahlberg) wins the Sanchez fight, the guards are next to a modern, flat screen computer monitor. (01:19:51)
Factual error: In the home video scenes, which were supposed to have been filmed during the 1970s or earlier, young Mickey Ward is shown wearing gloves bearing the Title Boxing logo. The Title Boxing company wasn't founded until 1998.
Factual error: In a scene where they are panning through Mark Wahlberg's apartment, there is a visible, almost direct shot of a modern Jack Link's beef jerky bag. This scene takes place in the early 90's, where this design didn't come out until 2005 or later.
Factual error: When Dickey (Christian Bale) arrives in jail, his cell block has several, modern security cameras lining the ceiling.
Factual error: In the scene where "High on Crack Street" premieres, the modern logo for HBO Documentary Films on screen. The original special did not have any opening logos and simply said Home Box Office Presents.
Factual error: In the scene where Micky and Dicky are jogging down the street, you can see in the background a brand new Toyota pick-up truck that was not available in the 1980s.
Factual error: Going into the fight with Shea Neary (the last on in the movie), the television broadcasts that Ward's record is 20-7. In reality, Ward's record going into that fight was 34-9.
