The Raiders announced Monday that Gilbert will join nine players recently cut by the team on the 10-player squad.
Gilbert was a sixth-round pick by St. Louis in 2014 and spent last season on practice squads with the Rams and New England. Gilbert was in training camp this summer with Detroit before getting cut.
The other members of the squad are running back George Atkinson III; offensive linemen Mitch Bell and Dan Kistler; defensive linemen Shelby Harris, Leon Orr and Max Valles; defensive backs SaQwan Edwards and Tevin McDonald; and linebacker Josh Shirley.
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