Peterson didn’t practice on Thursday or Friday due to a sore groin but Head Coach Leslie Frazier said on Friday he would be good to go come Sunday.
Ponder took the first team reps in practice this week though he was limited all three days. Frazier stopped short of naming him the starter on Friday but said he "looked pretty good" in practice and that the team will formally name the starter on Saturday, with all signs pointing to Ponder being under center when things get under way in Seattle on Sunday.
All of these players, along with Peterson and Ponder, are probable: LB
The Seahawks are banged-up too, with 16 players listed on their report. Of note, WR Percy Harvin is probable and is likely set to make his season debut on Sunday against his former team.
CB Brandon Browner (groin) is the only player Seattle ruled out, while DT Tony McDaniel (hamstring) is questionable after practicing fully on Friday.
In addition to Harvin, these players all practiced in full on Friday and are probable for Sunday's game: DE Red Bryant (concussion), S Kam Chancellor (hip), DE Chris Clemons (not injury related), RB Derrick Coleman (hamstring), LB Heath Farwell (knee), T Breno Giacomini (knee), DT Jordan Hill (biceps), DE Bruce Irvin (shoulder), S Jeron Johnson (hamstring), CB Jeremy Lane (thigh), RB Marshawn Lynch (knee), DT Tony McDaniel (hamstring), CB Richard Sherman (hip), and C Max Unger (concussion).