Danvers: Drew Salvo from Danvers, 13, left, explodes into a blocking bag held by Danvers High School football player Zach Ryan, who is entering this season as a senior captain at tight end and definsive lineman, right, during a drill at a youth football skills clinic at Danvers High School on Tuesday. Photo by Matthew Viglianti/Staff Photographer Tuesday, July 27, 2010.

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