The blow may have been low but Zab was looking for a way out of this fight. He needs to go ahead and take the $500k he got from this fight, pay off the people in his camp and retire from boxing. After rd 4 I said it wasn't going to hit 9 and look what happened. He wasn't throwing, he was moving all crazy and he seemed like he was scared of Khan.
Just retire Zab. Go on home, man.