Seahawks center Max Unger out 3-4 weeks with knee, ankle injuries
Second-year player Patrick Lewis is listed as Unger's backup at center.
Unger has been a starter for the Seahawks ever since he was drafted in the second round in 2009. He was selected to the Pro Bowl in each of the past two seasons and was a first-team All-Pro in 2012.
- Dan Gartland