October 15, 2011 - Jim Rogash/Getty Images North America more pics like this »
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As we head to the halfway point of the NFL season, the league is beginning to take shape. The champion Packers remain the lone undefeated team and talk of 16-0 has begun. The Patriots, Lions, and the upstart 49'ers sit at 5-1. As the months turn colder, the pretenders disappear. Time will tell which teams are playoff-worthy.