As Week 4 of the NFL season approaches, Scout.com’s Chris Steuber updates his 2009 NFL Rookie Rankings; a Big Board system where the top-20 rookies are ranked. The ranking system is based on playing time, potential impact, surrounding cast and team environment. Rising up the board is Vikings WR Percy Harvin (pictured left); find out where your teams top rookie ranks inside.

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2009 NFL Rookie Rankings – Week 4