Tre' Jackson, Sebastian Vollmer won't play for Patriots in 2016

FOXBOROUGH, Mass. -- New England Patriots offensive linemen Tre' Jackson (knee) and Sebastian Vollmer (hip) won't play for the team in 2016 after opening the regular season on the physically unable to perform list, coach Bill Belichick confirmed Friday.

The deadline for PUP players to begin practicing was Tuesday, and both Jackson and Vollmer were never activated.

Jackson's status comes as a mild surprise as he had been making solid progress and had, for a period of time, been joining teammates as part of conditioning drills before practice. Meanwhile, Vollmer was considered a long shot and has likely played his last game for the team as his contract expires after the season.

Offensive line coach Dante Scarnecchia said before the season that he hoped to achieve more continuity along the offensive line and the Patriots have done that with left tackle Nate Solder, left guard Joe Thuney, center David Andrews, right guard Shaq Mason and right tackle Marcus Cannon.

Meanwhile, Cameron Fleming has been a capable No. 3 tackle, with LaAdrian Waddle adding a fourth layer of depth at the position.

On the interior, sixth-round draft choice Ted Karras has been the top backup and then the club has three players on the practice squad it could call on for emergency depth -- Chris Barker, Chase Farris and Jamil Douglas.