Brad Pitt has lent his voice to a film about American football, according to reports.

The Inglourious Basterds Star narrates a National Football League (NFL) documentary entitled America's Game: 2009 New Orleans Saints.

The film is based on the team's victory over the Indianapolis Colts at this year's Super Bowl XLIV, the Associated Press said.

Brad won't be the first celebrity to voice the NFL's annual Super Bowl documentaries, with previous narrators including Alec Baldwin, Morgan Freeman, Gene Hackman and Bruce Willis.

Ed Harris, Martin Sheen and Jon Hamm have also lent their vocal talents in the past.

Brad, who is currently filming Moneyball in Los Angeles, will next be seen in period piece The Tree Of Life with Sean Penn and has voiced the part of alien Metro Man in upcoming animated comedy Megamind.

The American football documentary will air on the NFL network in the US on September 8.