Amid much speculation about the timing of an injury in his first game back, Chargers wide receiver Vincent Jackson's calf strain on Sunday may actually have been precipitated by him trying to be a team player.
According to a source, who did not want to be quoted because he was not authorized to divulge injury information, Jackson tweaked his left calf in practice Friday and then injured the other calf Sunday, likely by overcompensating for the original injury while trying to play.
Another source, who also did not want to be quoted because the team does not generally release specific injury information, said he didn't know of any "tweak" on Friday but that Jackson was sore and "he did more than he should have" in the lead-up to his first game.
Jackson started Sunday at Indianapolis but limped off the field prior to the game’s third play. He was declared out for the rest of the game short while later.