Hardwick had been the Chargers' starter since his rookie season of 2004. Hardwick started all 136 games he played in, including 67 straight.
He suffered a neck stinger in the 2014 opener and was placed on season-ending injured reserve. The Chargers clearly missed his veteran leadership. Due to injuries, four other players started at center last season.
The 33-year-old Hardwick was in the final year of his contract. He contemplated retiring last offseason before deciding to come back.
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