Merriman saw limited action in the season’s first five weeks. An Achilles injury forced him to miss the season opener in Kansas City. He saw limited action in Week 2 versus Jacksonville. He suffered a calf injury in Week 3 at Seattle and missed the team’s victory over Arizona in Week 4. He re-injured his calf last week in Oakland.
The Chargers now list four linebackers on Reserve-Injured: Donald Butler, James Holt, Jyles Tucker and Merriman. Linebacker Larry English also has missed three games and is expected to miss two to four more weeks.