The Steelers signed defensive end Brett Keisel to a four-year contract extension and made five roster moves - including placing guard Darnell Stapleton on injured reserve - on Monday.
Keisel's deal will keep him in Pittsburgh through 2013.
Stapleton being placed on injured reserve means that Doug Legursky has likely earned a spot on the final 53-man roster. The Marshall product will be the team's gameday swingman at guard and center.
Released Monday to get to the NFL-limit of 75 were wide receivers Steven Black and Martin Nance, safety Derrick Richardson and center Alex Stepanovich.
The Steelers have until 4 p.m. Saturday to trim their roster to 53 players.