I mean if they have no background at all: Gatti vs Ward Ali vs Frazier 3 Vazquez vs Marquez Holyfield vs Qawi Etc, etc The main event will be disappointing after that though.
Why not watch a bunch of Caleb and Canelo fights instead? At least your friends will be familiar with the fighters. I would never watch a good classic fight before a ppv main event. That will make the main fight seem like a rip off..
One of my first additions to the list. My dad was a Marquez fan and the baby bull was one of my favorites, we didn't talk for a few hours after that one
Ok for casuals I’d say to get a better point of view on violence at its most beautiful watch these fights. Louis/ Schmeling 2 Marciano/Walcott 1 Ali / Frazier 3 Foreman/ Lyle Moore/ Durelle Hagler/ Hearns Leonard/Hearns Duran/ Buchanan Bowe /Holyfield 1 Holyfield / Quawi 1 Holmes/Norton Tyson/Berbick Kelley/ Hamed Gatti / Ward SRR/ LaMotta 5 Those should keep a newb busy for a while.
Ivan Calderon vs. Giovani Segura, first fight Its dramatic and epic and can turn you on to what 108 pounds has to offer. Plus Calderon is historically relevant so theres that too.
If they are truly casuals, this is pretty close to an ultimate list. Maybe at the end, if you have a Tyson fan there who hasn't seen it and thinks he's the GOAT (and these exist), show them Lewis-Tyson with your biggest trollface on the entire time...