I've watched that fight countless times and that knee Bigfoot mentioned barely touched Overeem. After the fight i thought Overeem got hit a lot but when you re-watch it you can see things more clearly.
I've seen the fight only once and yeah, it looked to me that Werdum connected alot. Ill watch it again. I thought it was a bit odd that a BJJ dude was connecting so many times on a K-1 fighter!