All of the boxing scenes were shot in one day because the budget was too low to rent out Madison Square Garden for more than one day.
John Leguizamo wrote the first draft of this screenplay while on location in Australia, filming Moulin Rouge! (2001).
While promoting the film's release, John Leguizamo held a press conference with boxer Fernando Vargas. The two thumb wrestled in front of the crowd.
Vanessa Ferlito and Robert Forster have both appeared in separate Tarantino movies - Ferlito in Death Proof, and Forster in Jackie Brown.
Elena Goode's debut.