SEATTLE -- First it was a right ankle injury that delayed Russell Okung's debut in Seattle. Now Okung's left ankle has him back on the sideline.
The Seahawks' rookie left tackle left Sunday's 22-10 win over Arizona with a sprained left ankle suffered on Seattle's opening drive.
Okung, the sixth overall pick in the April draft out of Oklahoma State, was rolled up on during a 2-yard run by Marshawn Lynch. On the backside of the play, tight end Chris Baker fell and rolled into Okung's left ankle.
Coach Pete Carroll said after Sunday's game that the injury is "kind of the same" to Okung's high ankle sprain on his right leg suffered in Seattle's second preseason game. Carroll said Okung will miss some time.
"It's not as bad as the last one, but it's so unfortunate," Carroll said. "He just gets going and he is such a big part of what we are doing."
Okung's injury in the preseason happened on the first play when left guard Ben Hamilton fell into Okung. This time, it was Seattle's ninth offensive play when Okung went hobbling off.
Tyler Polumbus took over for Okung. Polumbus started Seattle's first three games with Okung out, then split time with Okung in a Week 4 loss to St. Louis.
After he was injured, Okung stood up and called for trainers who helped him off the field. He looked discouraged when talking with trainers on the sideline and rode in a cart back to the locker room.
Seattle fullback/special teams standout Michael Robinson also left with an unspecified knee injury. Carroll only said that Robinson was "banged up" and there were a few packages Seattle's offense could not use because there was no fullback available.