Rawls (calf) didn't participate in practice Wednesday, John Boyle of the Seahawks' official site reports.
Rawls sustained a calf contusion in last Thursday's game at San Francisco, finishing with six rushes for 32 yards and two catches for nine yards. His snap count (11) compared favorably with fellow reserve running back Fred Jackson (18), but if Rawls' injury lingers throughout the week, Jackson could act as the primary backup to Marshawn Lynch (hamstring) on Sunday at Dallas.