Baltimore Ravens inside linebacker Ray Lewis, left, greets Pittsburgh Steelers quarterback Ben Roethlisberger as their two teams warm up before an NFL football game, Sunday, Nov. 18, 2012, in Pittsburgh. Neither played due to injury. (AP Photo/Keith Srakocic)

Pittsburgh Steelers quarterback Byron Leftwich, left, warms up as quarterback Ben Roethlisberger watches before an NFL football game against the Baltimore Ravens in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers quarterback Byron Leftwich (4) out runs Baltimore Ravens linebacker Terrell Suggs (55) on his way to the end zone for a touchdown during the first quarter of an NFL football game, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers quarterback Byron Leftwich (4) out runs Baltimore Ravens linebacker Terrell Suggs (55) on his way to the end zone for a touchdown during the first quarter of an NFL football game, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers quarterback Byron Leftwich (4) celebrates a touchdown in the first quarter of an NFL football game against the Baltimore Ravens, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers wide receiver Mike Wallace, left, fumbles the ball after making a catch as Baltimore Ravens linebacker Dannell Ellerbe hits him during the first quarter of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. The Ravens recovered the ball. (AP Photo/Don Wright)

Baltimore Ravens' Jacoby Jones (12) returns a punt past Pittsburgh Steelers' Baron Batch (20) on his way to a touchdown in the first quarter of an NFL football game, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Don Wright)

Baltimore Ravens' Jacoby Jones (12) and Vonta Leach celebrate after Jones returned a punt for a touchdown in the first quarter of an NFL football game, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Ben Roethlisberger looks up at the video board as he stands on the sidelines wearing a sling on his injured arm during the second quarter of an NFL football game against the Baltimore Ravens, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers backup quarterback Byron Leftwich (4) talks with injured starter Ben Roethlisberger on the sideline during the second quarter of an NFL football game against the Baltimore Ravens, Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Gene J. Puskar)

Baltimore Ravens running back Ray Rice (27) runs around Pittsburgh Steelers nose tackle Casey Hampton (98) during the third quarter of an NFL football game in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers wide receiver Emmanuel Sanders (88) makes a catch in front of Baltimore Ravens defensive back Corey Graham (24) in the third quarter of an NFL football game in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Baltimore Ravens tight end Ed Dickson (84) is hit by Pittsburgh Steelers linebacker Larry Foote (50) during the third quarter of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. (AP Photo/Don Wright)

Baltimore Ravens kicker Justin Tucker (9) hits a field goal in the third quarter to give the Ravens of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. The field goal proved to be the difference in the 13-10 Ravens victory. (AP Photo/Don Wright)

Pittsburgh Steelers quarterback Byron Leftwich (4) is sacked by Baltimore Ravens defensive end Haloti Ngata (92) in the fourth quarter of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. The Ravens won 13-10. (AP Photo/Don Wright)

Baltimore Ravens quarterback Joe Flacco (5) walks off the field with head coach John Harbaugh after a 13-10 win in an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers quarterback Byron Leftwich (4) walks off the field after a 13-10 loss to the Baltimore Ravens in an NFL football game in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Baltimore Ravens head coach John Harbaugh watches from the sidelines during the third quarter of an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Nov. 18, 2012. (AP Photo/Gene J. Puskar)

Baltimore Ravens quarterback Joe Flacco (5) shakes hands with Pittsburgh Steelers quarterback Byron Leftwich (4) after an NFL football game in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers tackle Max Starks (78) sits on the bench late in the fourth quarter of an NFL football game against the Baltimore Ravens in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers running back Rashard Mendenhall (34) tries to get away from Baltimore Ravens outside linebacker Terrell Suggs (55) in the third quarter of an NFL football game in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Baltimore Ravens' Justin Tucker (9) kicks a field goal in the third quarter of an NFL football game against the Pittsburgh Steelers on Sunday, Nov. 18, 2012, in Pittsburgh. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) stands on the sidelines late in the fourth quarter of an NFL football game against the Baltimore Ravens in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Baltimore Ravens quarterback Joe Flacco (5) passes in the second quarter of an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Nov. 18, 2012. The Ravens won 13-10. (AP Photo/Gene J. Puskar)

Baltimore Ravens quarterback Joe Flacco (5) is sacked by Pittsburgh Steelers outside linebacker James Harrison (92) in the fourth quarter of an NFL football game on Sunday, Nov. 18, 2012, in Pittsburgh. Baltimore won 13-10. (AP Photo/Don Wright)

In this Sunday, Nov. 18, 2012, photo, Baltimore Ravens free safety Ed Reed runs onto the field prior to an NFL football game against the Pittsburgh Steelers in Pittsburgh. Reed was suspended for one game by the NFL on Monday, Nov. 19, for repeated hits to the head and neck area of defenseless players. (AP Photo/Don Wright)

In this Sunday, Nov. 18, 2012, photo, Baltimore Ravens free safety Ed Reed warms up prior to an NFL football game against the Pittsburgh Steelers in Pittsburgh. Reed was suspended for one game by the NFL on Monday, Nov. 19, for repeated hits to the head and neck area of defenseless players. (AP Photo/Don Wright)

In this Sunday, Nov. 18, 2012, photo, Pittsburgh Steelers quarterback Byron Leftwich walks off the field to head trainer John Norwig, left, after being sacked during the fourth quarter of an NFL football game against the Baltimore Ravens in Pittsburgh. A person familiar with the injury told The Associated Press Monday Leftwich injured his ribs in the first quarter of their 13-10 loss to the Ravens and will not start next week against the Cleveland Browns. The person spoke on condition of anonymity because the team had not officially commented on Leftwich's status. (AP Photo/Don Wright)

FILE - Pittsburgh Steelers quarterback Ben Roethlisberger looks up at the video board as he stands with a sling on the sideline in the second quarter of an NFL football game against the Baltimore Ravens in Pittsburgh, in this Nov. 18, 2012 file photo. Though the Steelers confirmed Ben Roethlisberger will return to the starting lineup on Sunday Dec. 9, 2012 against San Diego after missing three weeks due to injury, Roethlisberger will take the field with a little extra protection. Roethlisberger will play with a custom fit rib/chest compression shirt and a layer of Kevlar-lined composite in his shoulder pads to help absorb hits to his clavicle and shoulder joint regions. (AP Photo/Gene J. Puskar, File)

FILE - In this Nov. 18, 2012, file photo, Baltimore Ravens free safety Ed Reed runs after recovering a fumble by Pittsburgh Steelers wide receiver Mike Wallace during the first quarter of an NFL football game in Pittsburgh. Matt Birk dragged his bulky knees and aching body back to play another season for one reason: to get to the Super Bowl. At long last, Birk, Reed and several other veterans on the Ravens get the chance to play in football's biggest game. (AP Photo/Gene J. Puskar, File)

FILE - In this Nov. 18, 2012, file photo, Baltimore Ravens free safety Ed Reed, (20) runs after recovering a fumble by Pittsburgh Steelers wide receiver Mike Wallace during the first quarter of an NFL football game in Pittsburgh. Free agent safety Reed is finally a Houston Texan. The nine-time Pro Bowl safety signed a contract with Houston on Friday, March 22, 2013, a week after leaving town with no deal in place. (AP Photo/Gene J. Puskar, File)

FILE - In this Nov. 18, 2012 file photo, Baltimore Ravens free safety Ed Reed (20) runs after recovering a fumble by Pittsburgh Steelers wide receiver Mike Wallace during the first quarter of an NFL football game in Pittsburgh. The Houston Texans will meet with free agent Reed on Thursday, March 14, 2013. The team said on its Twitter site that general manager Rick Smith is flying to pick up Reed in a private jet owned by team owner Bob McNair. (AP Photo/Gene J. Puskar, File)