ARLINGTON, Texas -- The Seahawks will have to deal with Greg Hardy and the Cowboys' pass rush without starting left tackle Russell Okung.
Okung suffered an ankle injury during Thursday's practice and is inactive. Backup Alvin Bailey is expected to get the start in his place.
Bailey got some snaps in fill-in duty last week and was beaten for a pair of sacks while playing right tackle. He was given an opportunity to win the starting left guard spot in training camp, but did not perform well in the preseason.
"Alvin knows our system," said head coach Pete Carroll.