Green Bay Packers 2015 Impact Meter: ILB Sam Barrington

One of the Green Bay Packers' most important players on defense in 2015 will be a third-year linebacker who has just seven starts under his belt through his career.

That player, of course, is Sam Barrington, the inside linebacker who performed so well at the position in 2014 that Green Bay felt comfortable cutting veterans A.J. Hawk and Brad Jones this offseason, as Barrington continued to pilfer their snaps through the season.

Now, the stakes are higher than ever. Barrington will be asked to anchor the middle of an inside linebackers group that could make or break Green Bay's run defense in 2015. Furthermore, while he'll benefit from playing next to Clay Matthews, he may have another player…