First reported by Jason LaCanfora of CBS Sports, I can confirm that Chris Clemons had a magnetic resonance imaging (MRI) today, which revealed that the Seattle Seahawks defensive end indeed does have a torn anterior cruciate ligament in his left knee, which means he's done for the year.
The news is a big blow to Seattle's defense, as Clemons led the team in sacks with 11.5.
Clemons suffered the injury in the second half of Seattle's 24-14 win in an NFC Wild Card game at Washington.
With Clemons out, rookie Bruce Irvin would be next in line to take over as Seattle's weak-side, defensive end. The Seahawks are thin in terms of depth behind Clemons and Irvin.
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Seattle's other rookie defensive end, Greg Scruggs, could be a possible option in passing situations. The Seahawks also worked out Ray Edwards a few weeks ago.
Irvin is second on the team in sacks with nine.