Seahawks sign CB Artie Burns to 53-man roster, activate DT Cameron Young

The Seahawks have made several moves before Thursday's game against the 49ers. Seattle has signed cornerback Artie Burns to the 53-man roster off of its practice squad. Cornerback Riq Woolen is out with an ankle injury.The team also activated defensive tackle Cameron Young to the 53-man roster off of the reserve/physically unable to perform list.As one corresponding move, the Seahawks placed outside linebacker Uchenna Nwosu on injured reserve. That move was expected after Nwosu suffered a thigh injury during Sunday's loss to the Giants. He previously had been sidelined by a knee injury suffered in the preseason.Seattle also waived McClendon Curtis.The Seahawks elevated outside linebacker Jamie Sheriff and safety Ty Okada from the practice squad to the active roster for Thursday.