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Former Colts’ running back Edgerrin James tip-toes down the sideline during their game at Reliant Stadium in 2004. The Cardinals are looking to James to boost their running game, but that won’t happen unless the OL opens up holes this year.

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Tease photo

Just like last year, offensive line key

The Arizona Cardinals wrapped up their training camp Thursday, leaving the cool pines for the desert heat with a nagging question at the heart of the team's hopes for success.