Eagles' quarterback Donovan McNabb claimed after Sunday's tie game against the Bengals that he didn't know the rule was in the NFL's rulebook. "I've never been a part of a tie. I never even knew that was in the rule book," McNabb said. "It's part of the rules, and we have to go with it. I was looking forward to getting the opportunity to get out there and try to drive to win the game. But unfortunately, with the rules, we settled with a tie." The rule isn't an obscure one. It was adopted fully by the NFL in 1974, and 17 games have since ended tied. "I guess we're aware of it now," McNabb said. "In college, there are multiple overtimes, and in high school and Pop Warner. I never knew in the professional ranks it would end that way. I hate to see what would happen in the Super Bowl and in the playoffs." McNabb wasn't the only one confused by the rules. "Me and Greg Lewis were discussing it on the sideline, so we asked one of our trainers, and he told us it ends in a tie," running back Correll Buckhalter said. "I found out while we were in OT," rookie wideout DeSean Jackson said. "I thought we kept playing," linebacker Omar Gaither said.