Nostalgia is a powerful thing and it has a lot of people riding with former undisputed heavyweight champion "Iron" Mike from a betting perspective. The more skeptical fortune tellers side with Paul's 31-year youth edge and relative boxing success. Whatever side you fall on, there's a morbid curiosity about the whole thing.

An announcement in March revealed that boxing legend Mike Tyson would return to the ring after nearly two decades to take on YouTuber-turned-boxer Jake Paul. The bout was originally scheduled for July 20 before being postponed in late May after Tyson experienced an ulcer flare-up.