Updated

The Seattle Seahawks will start the season with defensive end Chris Clemons on the 53-man active roster, rather than placing him on the physically unable to perform list.

The decision with Clemons was among the surprises as the Seahawks got down to the roster limit Saturday. Clemons has not participated in training camp while recovering from major knee surgery.

The Seahawks also terminated the contracts of veteran fullback Michael Robinson, who was a Pro Bowl selection in 2011, defensive back Antoine Winfield, defensive tackle Clinton McDonald and quarterback Brady Quinn. Coach Pete Carroll tweeted that Winfield indicated his intention to retire after being released.

Additionally, Seattle traded an undisclosed draft pick to Jacksonville in exchange for defensive tackle D'Anthony Smith, pending a physical.