Penny (calf) doesn't have an injury designation for Sunday's game at Indianapolis, John Boyle of the Seahawks' official site reports.
The Seahawks enter Sunday with five healthy running backs, though at least one presumably will be placed on the inactive list. Chris Carson figures to get the start and most of the carries, but Penny could be the second man up, at least for early downs. The other options are Alex Collins, Travis Homer and DeeJay Dallas.