With Michael Pierce and Rayshad Nichols unavailable, the Ravens have signed defensive tackle Deadrin Senat and nose tackle Josh Tupou to their 90-man roster.
Tupou will join the Ravens after spending six seasons with the rival Bengals in Cincinnati.
The 6-foot-3, 340-pound Tupou has 23 starts in 65 games, with 86 tackles, six quarterback hits, two sacks and one forced fumble.
