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Two of the biggest combat-sports stars in the world: UFC Star Conor McGregor; undefeated boxer Floyd Mayweather. A once-in-a-lifetime fight. The grandest cross-platform sporting event in history. The story of both men, how they came from nothing to become megastars who would meet in the boxing ring.

How to Watch The Fight of a Lifetime: McGregor vs Mayweather Legally and Safely

If you want to stream The Fight of a Lifetime: McGregor vs Mayweather through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry The Fight of a Lifetime: McGregor vs Mayweather films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.