The Steelers released former starting center Justin Hartwig on Saturday after efforts to try to trade him failed.
Hartwig was beaten out by first-round choice Maurkice Pouncey in training camp. He was scheduled to make $2.08 million, which the Steelers considered too much for a backup center. The Steelers also released guard Kraig Urbik, a third-round choice last year who was a backup.
Right tackle Flozell Adams made the team and is expected to start.
Running back Jonathan Dwyer, a sixth-round pick, also made the team. The Steelers have four running backs on their roster: Dwyer, Rashard Mendenhall, Mewelde Moore and Isaac Redman. Fullback Frank Summers was released.
John Clayton, a recipient of the Pro Football Hall of Fame's McCann Award for distinguished reporting, is a senior writer for ESPN.com.