Johnson sustained a significant hamstring injury Sunday in Seattle's loss at San Francisco. In order to have enough depth in the secondary, Johnson was placed on injured reserve and Cox was re-signed.
Cox was signed by Seattle on Nov. 26 but was released a day later. Cox said being released after a day was due to the Seahawks' uncertainty about the status of cornerback Brandon Browner, who faces a possible one-year suspension for violating the NFL's substance-abuse policy.
Copyright 2013 by The Associated Press