It's probably in Vin Diesel's best interest to squash the beef with The Rock asap -- 'cause Dwayne Johnson would whoop that ass if things came to blows ... so says UFC champ Tyron Woodley.
Woodley (who's also an actor) says he recently went to the "Fast 8" set -- and says he thought things seemed peaceful ... though Rock wasn't there at the time.
But that was then ... before Rock called out Diesel as an unprofessional "candy ass" on social media.
There's more ... Woodley also talks about his rumored cameo in the 'Spider-Man' movie -- and also picks a winner in the Diaz vs. McGregor rematch. Check out the clip.
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