Jammer (6-0, 204lbs.) has started every game for the Chargers since 2003. Last season, the former Texas Longhorn set career highs with 72 tackles and 19 passes defensed. He was the team's third-leading tackler in 2005.
"I'm grateful that Dean Spanos, A.J. Smith and Ed McGuire saw me as an integral part of this team and wanted to keep me here," Jammer said. "It's a huge relief. Ever since the Chargers drafted me, I've said that I want to play my whole career in San Diego. This contract will go a long way toward that, and I'm thankful."