*never seen Wilder fight..but if he can box, he can beat Arreola. Arreola comes in fat, not lean.. so his stamina is always in question. BUT, he knows how to fight. His basic skill set is solid. His rights r perfect and his hooks r pretty damn good as well. If Arreola is in shape, it's hard to go against him in any fight other than one against a Klitschko.