The 6-1, 235-pound Cooper saw action in all 16 games as a reserve linebacker and special teams performer. He started two games at inside linebacker in the middle of the season for Randall Godfrey. Cooper finished the season with 30 tackles and 1.5 sacks on defense and nine stops on special teams.
The 6-4, 310-pound Dielman played in all 16 games and started the last 14 at left guard. Dielman's consistent play on the line helped the Chargers rush for 2,072 yards as a team last season.
Wilhelm, a 6-4, 245-pound linebacker, also played in all 16 games, splitting time as a reserve 'backer while contributing on special teams. He had 16 tackles, one sack and an interception on defense while logging 15 tackles and a forced fumble on special teams. He tied as the team's third-leading tackler on the specialty units.