New England Patriots

Bill Belichick and Nick Saban (Getty Images)

By Matt McCarthy,

A new NFL Films documentary on the four-decade-long relationship between Bill Belichick and Alabama head coach Nick Saban premieres tonight (Tuesday) at 9 p.m. eastern on HBO.

HBO says the documentary will feature the two coaches sharing “a multi-layered conversation about their interwoven history, admiration, coaching philosophies, and more.” The trailer for the film provides an inside look at a coaching retreat Belichick and Saban take each year.

Belichick and Saban met in 1982 when Saban was working with Bill’s father Steve as an assistant coach at the Naval Academy. When Belichick became head coach of the Cleveland Browns in 1991, he hired Saban as his defensive coordinator.

The film is directed by Ken Rodgers of NFL Films, who put together the 30 for 30 documentary “The Two Bills,” detailing the relationship between Belichick and Bill Parcells.

“Bill Belichick and Nick Saban have earned their rightful place in the pantheon of greatest coaches ever, across all sports, and this film intimately spotlights their woven history from Navy to Cleveland to now,” said Peter Nelson, Executive Vice President of HBO Sports. “It will capture for the first-time ever some of the most engaging and personal conversations held every year by the two most towering figures in the game today. We are excited to partner with NFL Films to tell this unique story of friendship and mentorship.”

The documentary will be available for streaming on Wednesday.

You can hear Matt McCarthy on various 98.5 The Sports Hub programs. Follow him on Twitter @MattMcCarthy985.