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Cowing (concussion) has been ruled out for the rest of Sunday's game against Seattle, Nick Wagoner of ESPN.com reports.
Cowing entered concussion protocol after taking a hit to the head during a punt return in the second quarter. He won't return Sunday, and he'll have to go through the league's five-step concussion protocol in order to play in Week 12 against the Packers on Sunday, Nov. 24.
