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Carolina Panthers improve DL depth

CHARLOTTE, N.C. -- Quarterback Cam Newton no longer is the lone survivor of the Carolina Panthers' draft class of 2011.

Carolina signed free-agent defensive tackle Sione Fua on Wednesday to fill the roster spot that came open when injured right guard Garry Williams (left knee) was placed on injured reserve.

Fua, a third-round pick by the Panthers in 2011, was among the final roster cuts on Aug. 31. The past two years he played in 24 games with 12 starts.

He will add depth to an already solid defensive front that held the Seattle Seahawks to 70 yards rushing in a 12-7 loss on Sunday.

Carolina also signed offensive lineman Mike Jasper to the practice squad and re-signed defensive tackle Casey Walker to the practice squad. Walker also was among the team's final cuts.