Because Wardley isn't the best boxer, and has pretty porous defense, he's had a really bad habit of getting touched early by almost all of his opponents, even the ones with pisspoor skillsets. Eric Molina had him reeling, Gorman had him really, Clarke had him reeling, Huni had him reeling. Zhang will have him... unconscious.
Probably. But Zhang better finish him off in the first half otherwise Wardley will rally and stop him.
Zhang's ready to drop to gatekeeper level. Post-40 with health problems, he can only take so many of these wars.
Wardley's a very limited fighter who isn't at all hard to hit and was in danger several times against Huni, a guy widely regarded as being a feather fist. Zhang's dropped every last one of his opponents in the last few years, some of them for the first time in their careers. I'd say the fight ends up going about like Joyce 2. Very winnable fight for Big Bang.