San Diego Chargers linebacker Shawne Merriman informed the team today that he has decided to have surgery on his knee and will miss the remainder of the 2008 season. ?Shawne informed me he did not feel right (on the field) and thought it best to shut it down,? said Chargers General Manager A.J. Smith. ?The road to winning the AFC West just got more difficult, but not impossible. Nothing is impossible. Shawne is a great player and an inspirational leader. He will be missed. We wish him a successful surgery and a speedy recovery.? The Chargers are expected to place Merriman on ?Reserve-Injured? later this week.