A week after adding Adrian Colbert to their practice squad, the Seahawks promoted the free safety to the 53-man roster. Defensive tackle Bryan Mone was waived to make room on the 53-man roster.

Colbert, who started 12 games for the 49ers over the past two seasons, is a player the Seahawks thought highly of long before he signed last week, making his quick promotion to the active roster not much of a surprise.

"We've had our eye on him for a couple years and this was a great job by John (Schneider) and (director of pro personnel Nolan Teasley) and the guys that kept track of him to get him in the program," Seahawks coach Pete Carroll said last week after Colbert was signed to the practice squad. "We really think he's got great potential. He's really fast, he's really tough. He finished his career at Miami, transferring in. We just picked him up a long time ago. He's just one of those guys to me that demonstrates the kind of energy that we really like when we play. He loves to run and hit, now. He's really fast, running 4.3s (in the 40-yard dash). He was 211 pounds yesterday. Big kid, strong kid. He's got kind of spirit about him, too. He kind of fired me up."

Colbert, 25, was a seventh-round pick in 2017 by the 49ers, and started the final six games of his rookie season. He opened 2018 as San Francisco's starting free safety, but was placed on injured reserve with an ankle injury after seven games, six of them starts. Colbert was waived/injured by the 49ers prior to the start of the season, then waived from injured reserve with an injury settlement earlier this month.

Mone originally signed with Seattle as an undrafted free agent in May. He was active for the Seahawks' first three games this season, recording three tackles, all against the Cincinnati Bengals in the regular-season opener.