It's becoming routine. Ref stands them up, resumes the fight, Werdum throws a few light punches, Overeem gives up ground and covers. That's normal, he takes the light shots because he's big enough to do so, and then he acts like a turn by turn engagement, and starts hammering on people. However, at this point, Werdum tries for a takedown, Overeem throws him away, and walks off so the ref restarts.