Pittsburgh Steelers head coach Mike Tomlin walks through some of his team as they stretch during NFL practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers wide receiver Toney Clemons tries to make a catch during NFL practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers quarterback Charlie Batch talks with teammates as they stretch during NFL practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers linebacker Sean Spence goes through drills during NFL practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers linebackers Mortty Ivy (57) and Lawrence Timmons (94) do drills in front of teammates during NFL football practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers linebacker Sean Spence finishes a drill during NFL practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)

Pittsburgh Steelers linebacker Sean Spence goes through drills during NFL football practice on Thursday, May 24, 2012, in Pittsburgh. (AP Photo/Keith Srakocic)