Except for the Flint Tropics, all of the team names and uniforms are the same as the real ABA.
In the film, Jackie Moon says that he had never vomited before, not even as a baby. In reality, Will Ferrell suffered from pyloric stenosis, a condition that causes frequent vomiting, as a baby. A scar on his upper right abdomen, from the surgery he had to treat this condition, appears in this and many other films.
Amy Sedaris had a role, but her scenes were cut from the final film.
In April 2008, Rocky the Grizzly Bear, who wrestles Will Ferrell's character in this movie, killed Stephan Miller, one of his trainers and a cousin of a stuntman doubling for Ferrell, by biting him on the neck.
Will Ferrell has stated that this would be his last sports-related comedy.
One of the Tropics players has the last name Munson. Woody Harrelson's character in Kingpin (1996) was also named Munson.
Lou Redwood threatens Cornelius Blanks with a Smith & Wesson Model 19 revolver, with a 4-inch barrel. It was commonly issued to police officers in the 1970s, and is still carried by some. Like most .357 revolvers, it can fire .357 or .38 and .38+P rounds.
The narrator for the Shasta Apple soda commercial is Tom Bosley of Happy Days fame. We see the commercial during the on court brawl.