Seattle tight end Jerramy Stevens was expected to miss the next six weeks after injuring his surgically repaired left knee during practice. An MRI exam showed that Stevens had torn the meniscus in the same knee that was fixed April 25. He was scheduled to have surgery in Seattle. The Seahawks open the season Sept. 10 at Detroit. Six weeks would be the end of September, and the Seahawks could give Stevens more time to recover with their bye coming on Oct. 8.