Here is an article as it applies to 2 Charger players, vincent Jackson and Marcus McNiel. McNeill, Jackson receive roster exempt letters - NFL - Yahoo! Sports The San Diego Chargers have placed unsigned restricted free agent offensive tackle Marcus McNeill(notes) and wide receiver Vincent Jackson(notes) on the roster exempt list, which means they can't play for three games after signing their one-year tenders. My questions are; Have the Patriots done the same with Mankins? Do the 3 games include pre-season game or are they all regular season games? Does anyone have the facts as it applies to Mankins? Connelly has done a good job so far but it is pre-season. Also what if he gets injured? I'm concerned about a suitable back up. Now when cuts are made son OG may become available. I remember William Robert being cut by the Giants and he gave us a couple of good years. But right now I don't have any confidence in any of the backups. Discuss.