Seattle Seahawks linebacker Lofa Tatupu passed his post-concussion test, according to a team source, and is expected to play Sunday against the Chicago Bears, barring a pre-game setback.

Take a look at the key inactives for Sunday's games.

Will Shawne Merriman start in Week 16? We have the answer in our exclusive inactives list for tonight's AFC West battle between Denver and San Diego.

What's the status of Nathan Vasher for Week 15? We have the latest in our exclusive inactives list for tonight's NFC North clash between Chicago and Minnesota.

What is the status of Todd Heap for Week 9? We have the answer plus all the inactives for tonight's AFC North battle between the Ravens and Steelers.

Will Marvin Harrison start in Week 7? We have the answer plus all the inactives for tonight's important Indianapolis-Jacksonville clash at ALLTEL Stadium.

Week 4 inactives