There are likely two thoughts that accompany this selection, and potentially three as some fans may be thinking "who?"
First, "where is the pass rushing defensive end the Seahawks so desperately need?" Following would be "isn't pick 11/12 a bit early for a linebacker that isn't Luke Kuechly or Vontaze Burfict?"
The concerns over defensive end are easy to respond to. The 2012 free-agent class has several players that would be a great fit in Seattle. I'm anticipating John Schneider and Pete Carroll will be busy finding a pass-rusher.
As free agency nears I'll offer a series of articles on some of the players the Seahawks could target, and how they may look to mix up their approach with the front four.
As for taking Zach Brown in the top 12...I don't actually expect the Seahawks to keep their first pick. There figures to be a few teams wanting to move up to that spot, and Seattle will most certainly covet building a cache of early draft picks in 2013 to make a move on a franchise quarterback.
There is a slim chance Trent Richardson will be available when the Seahawks are on the board. While he would be very difficult to pass on, the Cincinnati Bengals have the extra draft capital to make a move and add the rusher their team desperately needs.
More likely, Cincinnati will be interested in the spot to fill needs at offensive guard and cornerback. At picks 11/12 and 17, they'll be in much better shape to get impact players than 17 and 21.
Their division rival and Seahawk-nemesis Pittsburgh Steelers also need to take a rare look at moving up in the draft. They simply must add a left tackle this offseason, and free-agent options are thin.
Jonathan Martin, and possibly Riley Reiff, should be on the board, but pickings will be slim at 24. A trade with Pittsburgh would net the Seahawks that 24th pick, a 2013 first-round selection and likely replace the fifth-round pick they send to Buffalo.
It could also keep division-rival Arizona from grabbing an elite left tackle a pick or two later.
There is a chance that Seattle could miss out on Brown if they trade down. Some analysts are mocking him to the Philadelphia Eagles at 15.
I see him being available late in the first round, even if he is the best 4-3 outside linebacker in the draft.
He is a versatile player that will likely be able to play all three linebacker slots for the Seahawks, giving them options with K.J. Wright and the rest of their linebacker corps. He is the fastest linebacker in his group and should be able to fill a big void in Seattle...covering tight ends and running backs in pass routes.
With David Hawthorne and Leroy Hill at risk in free agency, and both having struggled in pass protection, Irvin fills what could actually be their biggest need heading into the draft. He may not be the next All-Pro linebacker, but he has the look and feel of a standout backer that will help make the Seahawks an elite defense.