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Monday, November 28, 2011
QBR ranks: Should Seahawks try Portis?

By Mike Sando

Seattle Seahawks quarterback Tarvaris Jackson has gamely battled through a torn pectoral muscle suffered during an Oct. 9 victory over the New York Giants.

Taking a closer look at Jackson's performance during a 23-17 defeat to Washington in Week 12 brought to mind a question for our consideration: Should the Seahawks shut down Jackson and use the remaining games to see what third-stringer Josh Portis has to offer?

A few factors entering into such a decision:
Health permitting, Jackson probably needs to start against Philadelphia on Thursday night. His experience will help during a short work week. If Jackson were to enjoy a strong game, Seattle could reevaluate. Otherwise, the team could consider starting Portis at home against St. Louis in Week 14. In the meantime, make him the No. 2 option against Philadelphia.

Your thoughts? I did not raise draft order as a primary consideration because tanking the season shouldn't be a primary motivation. But if the team could protect Jackson from more serious injury, find out more about Portis and gain a few spots in the 2012 draft, that would be OK, too.

The chart shows Total QBR scores for NFC West quarterbacks each week this season. League-wide scores for the season are available here. All were well below the 50-point average on a 100-point scale.

Quick thoughts on how NFC West passers graded out in Week 12 according to Total QBR, with NFL passer ratings in parenthesis as a reference point:
The chart below shows how quarterbacks from games involving NFC West teams fared in Total QBR for Week 12.