Foreman (2017)

Cast as America’s Villain in the famed Rumble in the Jungle against Muhammad Ali, George Foreman lost one of the greatest fights in sports history. Immediately after the defeat, "Big George" fell into a spiral that made him abandon boxing and spend 10 years becoming an ordained minister following a near death experience. 20 years later on and into his 40’s, Foreman began an improbable climb back to the summit of world boxing becoming the heroic figure he’d always been destined to be, and writing one of the greatest underdog stories ever told.

Unfortunately the movie Foreman is not yet available on HBO Max.