The Seattle Seahawks activated defensive back Walter Thurmond on Friday from a four-game suspension for violating the NFL's substance-abuse policy.
Thurmond will rejoin the Seattle secondary for the Seahawks' regular-season finale on Sunday against the St. Louis Rams.
To make room for Thurmond on the 53-man roster, the Seahawks released cornerback Perrish Cox.
Thurmond started the first two games of the season when cornerback Brandon Browner was out with a hamstring injury and in a Week 11 victory over the Minnesota Vikings when Browner was sidelined with a groin issue. In that game, Thurmond returned his first NFL interception for a touchdown.
Browner remains out while serving a suspension for violating the NFL's substance-abuse policy. In the meantime, Byron Maxwell and Jeremy Lane stepped up to fill the void.
"It's awesome having (Thurmond) back here at practice and going through it," Seahawks defensive coordinator Dan Quinn said. "So just the experience of him playing nickel and also outside adds to the whole group. The fact of just having another player of Walt's caliber back in there really adds just to the whole package of how we're playing."