Packers use cap surplus on Josh Sitton

Earlier this week, we noted the Green Bay Packers had $12.8 million in salary cap space and seemed primed to start handing out a few contract extensions to deserving veterans. Up first, as he should have been, was right guard Josh Sitton.

People outside the NFC North might not have heard of Sitton, much less realize he developed into one of the NFL's top guards last season. But as we discussed in our Most Underrated package this summer, Sitton is a powerful run blocker who was a Pro Bowl alternate last season. He hasn't missed a snap since the start of the 2009 season and was named league's best offensive lineman by NFL Alumni last winter.

(Josh: You can make our commission check out to "NFC North blog Retirement Fund.")

Sitton's new contract, signed Friday, locks him up through the 2016 season. Numbers haven't been reported, but Sitton's status as a budding Pro Bowl player suggests he wasn't likely to take a discounted deal.

It's not immediately clear how much cap space the Packers have left, but unless they intentionally structured Sitton's deal to consume the surplus, they should have enough room for at least one more extension. Possibilities include tight end Jermichael Finley, receiver Jordy Nelson and possibly punter Tim Masthay.