What Was Donovan McNabb Expecting, Penalty Kicks?

What's worse? Philadelphia Eagles' Donovan McNabb fumbling once and throwing three interceptions to the lowly Cincinnati Bengals in a 13-13 tie or admitting afterwards that he didn't know an NFL game could end in a tie? "I didn't know that," said McNabb, who just finished playing one of his worst games as a professional. "I've never been part of a tie. I never even knew it was in the rule book."