Tupou was promoted to the 53-man roster Wednesday, Geoff Hobson of the Bengals' official site reports. Tupou fills the spot that wideout John Ross (shoulder) left behind when he was placed on injured reserve. The undrafted rookie played in just one game this season against Jacksonville, but he didn't play at all on defense or special teams. Tupou isn't expected to play much, if at all, Sunday against the Bears either.
The Bengals waived Tupou on Tuesday. Tupou appeared in the Week 10 win over the Titans while fellow defensive tackle Pat Sims sat out with a calf injury, but didn't see the field in Sunday's victory over the Broncos. The Bengals had waived Sims last weekend when it became clear he wouldn't be available against the Broncos, but with his health no longer much of a concern, the veteran re-signed with the team Tuesday, resulting in Tupou losing his roster spot.