The thing is, if Usman and Covington fight I have no idea who wins. Usman's certainly the bigger man and probably stronger, but Covington's quicker than a hiccup and both of them have cardio to burn. In terms of overall wrestling, I think Covington might be slightly better but I can't recall ever seeing Usman on his back and I'm not at all sure he can put him there, or vice versa. I figure it'll be a (possible) 5 round box and clinch fest and if that occurs I think Usman's boxing is a little tighter than Colby's, but this is a definite pick 'em fight.
Mind you, I'll be shocked if Colby beats RDA so...