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Careful, Brandon Marshall : You don't want to go down with a trading-card injury before your pro career gets started. Marshall , Denver 's fourth-round pick, joined 30 NFL newbies--including Reggie Bush in a number 5 jersey--at the Reebok NFL Players Rookie Premiere at the L.A. Coliseum, where they spent four days preening and posing for card companies like Upper Deck (above), Topps and Donruss Playoff. Marshall 's take on the event: "Overwhelming."