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Chargers sign center J.D. Walton, promote tackle Tyreek Burwell from practice squad

SAN DIEGO -- The San Diego Chargers made a couple moves to add depth to an ailing offensive line on Tuesday.

After releasing tight end Kyle Miller and placing guard Johnnie Troutman on the season-ending injured reserve earlier in the day, the Chargers filled those two roster spots by signing center J.D. Walton and promoting undrafted rookie Tyreek Burwell from the practice squad to the active roster.

Walton, 28, played 16 games at center for the New York Giants last year. However, the Giants cut him in March in order to clear a path for second-year pro Weston Richburg to take over at center.

Walton missed the entire 2013 season and almost all of 2012 due to ankle injuries while with the Denver Broncos. A third-round selection by the Broncos in the 2010 NFL draft, Walton played for Chargers head coach Mike McCoy while he served as offensive coordinator for the Broncos. Walton will wear No. 66.

The Chargers filled Burwell's spot on the practice squad by bringing back guard Michael Huey.