Joey Giardello sued the film's producers for libel over the depiction of his fight with Carter. The case was settled out of court and Jewison agreed to make a statement on the DVD version that, "Giardello no doubt was a great fighter."
Director Norman Jewison showed the film uncompleted at the 1999 Toronto International Film Festival, without credits or proper color. He had been working on the movie the night before it was shown, and submitted it to the festival with the film still splinted together in hundreds of pieces. Before showing the movie he said to the eager audience, "I'm so nervous that the splints may fall apart."
After the shootings in the bar are shown the first time, the exterior shot shows the traffic light at Madison Ave. In the later flashback, there is no traffic light.
In the first featherweight fight sequence, the radio sportscaster pronounces the Pennsylvania city name, "Reading," as "reeding" (long "e" sound), but it is correctly pronounced as "reding" (short "e" sound).
When Lezra visits Rubin in prison and they are talking at the table, Rubin is shown holding a photo in his hands. The reverse shot shows Rubin with his hands clasped and the photo sitting on the table.