Mike Tomlin says that defensive end Brett Keisel will be out against Miami:
Tomlin said either veteran Nick Eason or Ziggy Hood, the team’s first-round draft pick in 2009, will start in Keisel’s spot on the right side but he’s not yet sure which. Both will play and the Steelers may have to add a defensive lineman to join the five healthy ones for Sunday’s game. The Steelers normally dress six defensive linemen for games.