Halfway through the preseason schedule, the Green Bay Packers' roster and depth chart is starting to take shape. Here's a look at who hurt their chances during Saturday’s 21-7 victory at the St. Louis Rams: 1. Derek Sherrod: A week ago, the Packers were raving about the return of the former first-round draft pick, who saw his first extensive playing time since he broke his leg late in his rookie season of 2011. A week later, they have reason to be concerned about whether he can be the backup swing tackle they need without Don Barclay (who was lost for the season to knee injury early in camp).via ESPN.com - NFL Nation http://ift.tt/1mY4392

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