I think it's a tough one as Povetkin would be very aware of Zhang's strenghts and fight cautiously in spurts in and out in the first half, focused on defence, then gradually step on the gas in the second half. He would have to be on his very A game that night as I don't think his chin would hold up if he got taggged the way Joyce or Hrgovic did, and Zhang is sure capable of sneaking one or two of those hammers in. Both very skilled and aware fighters, good match up anyway.
