Charlton is expected to replace the injured T.J. Watt (hip) as a starter on the edge during Sunday's game against the Chargers, Chris Adamski of TribLive.com reports.

Since being signed off the practice squad Nov. 3, Charlton has appeared in each of the past three games for the Steelers, filling a rotational role on defense while logging six tackles. Expect Charlton to get a steady bump in field time Sunday in place of Watt after he played no more than 34 percent of the Steelers' defensive snaps in any of his prior three contests.

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