Throw in both and see what happens ... Mostly the Rock tho - power and size to make for a good grappler.
i always thought prime Roy Jones jr if he were taught how to scramble and avoid a few take downs. I mean if he could avoid just a few take downs it wouldn't be long before he could KO whoever was in front of him or bust them up badly . I base this off of watching Chuck Liddell and Liddell was no where near Jones in the hands department.
Hoost said he didn't feel comfortable with the anything goes aspect, Art Davie said that Hoost's trainer knew the perfect guy for this and hence getting Gerard Gordeau who was a nast Karatea/street fighter. I think Tyson would have been beaten by Gracie, Shamrock, Gordeau and Smith in the first UFC.
The best answer for this is Danny Hodge Golden Gloves Champion, 7-2 Professional Boxing record, 3 time NCAA D1 Champion, two time Olympian, Freestyle Silver Medalist and a freakishly strong grip to the point where he could snap pliers. Also former World Cruiserweight Champion O'Neil Bell who was a State Champion Wrestler too. Heavyweights like George Foreman, Hasim Rahman and David Tua could have been good at it too potentially.