The injury occurred during the Seahawks' opening drive Sunday. Rawls was hit behind the line and dropped for a 3-yard loss on a play with 5:36 remaining.
Rawls gained 44 yards on six carries before leaving the game. He has been getting extended playing time as the replacement for injured Marshawn Lynch. The rookie came into the game with 786 yards rushing on 141 carries and four touchdowns.
Also, Seattle safety Kam Chancellor hurt his tailbone in the first quarter. His returnwas questionable.
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