Honestly rockhold has a helluva better chance. He's a huge middleweight and his legit-su is near damn untouchable in his division. Werdum is the best bbj guy in ALL of the ufc......ngannou may be a strong guy, but his ground game is undoubtedly nowhere fabricio's level. Standup wise, we haven't Seen ngannou again what i call a capable oponent....arlovski was a good win although he was already down 2 or 3 fight in a rows. Meanwhile doom's standup has improved fight after fight for years(barring whatever the hell it was he did against stipe) Of course werdum would do everything in his power to take it to the ground anyway, where i'd have ZERO faith in ngannou