Yes, Wladimir is known for having a questionable chin and combined with Haye's punching power, this is what makes the fight BIG and EXCITING at least for the first 4-5 rounds. Since Haye is not known for a granite chin either, I see his only chances are taking away Wlad's jab with good defense, footwork and speed at least for the first 3-4 rounds so Wladimir gets angry and impatient and wants to EXCHANGE early. I mean that's the best chance for Haye, avoid his jab, time his power shots, counter them with his own bombs, and finish the job early. How much of a chance is that in percentage? 30 at MOST. I mean Klitschko is the favorite to win here, but everything unexpected can happen in the first few rounds if the younger, faster, power punching boxer lands on Champs questionable chin.