By Pat Kirwan, NFL.com Senior Analyst -
(Jan. 18, 2006) -- As much as people want to say the game of pro football is ever-changing and that super-fast athletes will dominate the sport, the truth is something different. The four teams left standing after the dust settled from Divisional Weekend have a few things in common. None of the four teams were No. 1 in offense or defense this season. They were pretty good in most categories, but they had something else that doesn't show up in statistics: They all had the ability to "punch an opponent in the mouth" if they had to during a game.
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