Pittsburgh Steelers quarterback Ben Roethlisberger, left, evades Dallas Cowboys linebacker Bradie James, center, and defensive end Jason Hatcher, right, as he scrambles in the fourth quarter of an NFL football game in Pittsburgh, Sunday, Dec. 7, 2008. The Steelers won 20-13. (AP Photo/Keith Srakocic)

Pittsburgh Steelers tight end Heath Miller (83) is tacked by Dallas Cowboys' Ken Hamlin as he falls into the end zone for a fourth-quarter touchdown on a 6-yard pass play from quarterback Ben Roethlisberger during an NFL football game in Pittsburgh, Sunday, Dec. 7, 2008. The Steelers won 20-13. (AP Photo/Gene J. Puskar)

Pitttsburgh Steelers quarterback Ben Roethlisberger (7) is pursued by Dallas Cowboys defensive end Marcellus Wiley (75) on a five yard touchdown play in the first quarter in Irving,Texas, Sunday, Oct. 17, 2004. Roethlisberger conected with receiver Plaxico Burres for the score. (AP Photo/LM Otero)

Pittsburgh Steelers running back Mewelde Moore (21) in action against the Dallas Cowboys during a NFL football game in Pittsburgh, Sunday, Dec. 7, 2008. (AP Photo/Gene J. Puskar)

Pittsburgh quarterback Terry Bradshaw turns to hand off to running back Rocky Bleier in the Steelers 21-17 win over the Cowboys in Super Bowl X on January 18, 1976 at the Orange Bowl in Miami, Florida. (National Football League)

Pittsburgh Steelers running back Frank Pollard (30) goes airborne in the Steelers 27-13 loss to the Dallas Cowboys on October 13,1985 at Texas Stadium in Dallas Texas. Pittsburgh Steelers - (National Football League)

Mike Gaechter (27), Dallas defensive safety, brings down Pittsburgh's John Henry Johnson with a flying tackle in the 3rd quarter of game at Forbes Field in Pittsburgh, on Oct. 21, 1962. Johnson took a pass from Steeler quarterback Bobby Layne for an seven yard gain before the tackle. Watching the action is Cowboy Bob Lilly (74). The Cowboys won the game 42-27. (AP Photo)

Joe Green (75), left tackle for the Pittsburgh Steelers, takes a short cut across Blaine Nye (61) of the Dallas Cowboys, Oct.8, 1972, to put a sudden halt on Walt Garrison (32) . The play picked up 2-yards in the first quarter of play between the Steelers and Cowboys at Irving, Texas. (AP Photo)

Pittsburgh Steelers quarterback Terry Bradshaw (12) turns around with the ball after the snap to hand the ball to an open receiver during action against the Dallas Cowboys in Super Bowl XIII action in Miami, Fla., Jan. 21, 1979. Steelers running back Rocky Blier (20) is at right. The Steelers went on to defeat the Cowboys 35-31. (AP Photo)

Pittsburgh Steelers running back Franco Harris carries the ball into the end zone for a touchdown in the fourth quarter of Super Bowl VIII with the Dallas Cowboys in Miami, Jan. 21, 1979. (AP Photo)

John Stallworth of the Pittsburgh Steelers hangs onto a pass as Everson Walls, of the Dallas Cowboys, hangs onto Stallworth during action on Oct. 13, 1985. (AP Photo)

Pittsburgh Steelers quarterback Neil O'Donnell is sacked by Dallas Cowboys Chad Hennings, right, during second quarter action at the Super Bowl XXX in Tempe, Ariz. Sunday Jan. 28, 1996. (AP Photo/Doug Mills)

Balloons are released over Sun Devil Stadium during the halftime festivities at the Dallas Cowboys vs. the Pittsburgh Steelers game at Super Bowl XXX in Tempe, Ariz., on Sunday, Jan. 28, 1996 (AP Photo/Elise Amendola)

Dallas Cowboys running back Emmitt Smith (22) runs the ball during the NFL game against the Pittsburgh Steelers on August 31, 1997 in Pittsburgh, Pennsylvania. The Cowboys won the game 37-7. (AP Photo/Paul Spinelli)

Pittsburgh Steelers wide receiver Lynn Swann goes up to make a catch over Dallas Cowboys cornerback Mark Washington in the Steelers 21-17 win over the Cowboys in Super Bowl X on January 18, 1976 at the Orange Bowl in Miami, Florida. (National Football League)

Dallas Cowboys safety Cliff Harris (43) makes a 45-yard return on a second quarter punt Oct. 8,1972 before being brought down by Steelers' Preston Pearson (26) and Roy Gerela (10) Oct. 8,1972. Cowboys took the game on their home turf, 17-13. (AP Photo/FK)

Pittsburgh Steelers' Lynn Swann (88) is lifted into the air by teammate Jack Lambert (58) after Swann caught a touchdown pass from Terry Bradshaw in the fourth quarter of Super Bowl X against the Dallas Cowboys at the Orange Bowl in Miami, FL., in this Jan. 18, 1976 photo . Reacting on the field are, from left, Jim Clack (50), Reggie Garrett (86), and Mike Collier (44). Steelers won 21-17. (Associated Press)

Dallas Cowboys quarterback Roger Staubach scrambles to get away from Pittsburgh Steelers Dwight White (78) Jan. 19,1976 during second quarter of Super Bowl X at the Orange Bowl in Miami. (AP photo/Joe Caneva)

Pittsburgh Steelers quarter back Terry Bradshaw (12) finds himself in trouble behind the line during first quarter action, Saturday, August 28, 1976, Irving, Tex. Taking the Steelers down for a loss is Dallas Cowboys Harvey Martin (79). (Associated Press)

Steelers fullback Franco Harris held the ball in the air after scoring his second touchdown against the Dallas Cowboys Sunday, Nov. 21, 1977. Harris earlier scored on a 61yard dash that drew praise from Steelers coach Chuck Noll. Harris finished the day with 179 yards, his best as a pro, and Pittsburgh won 28-13. (Associated Press)

Former University of Pittsburgh running back Tony Dorsett returned to Pittsburgh as a pro with the Dallas Cowboys in their game with the Steelers in Pittsburgh, Nov. 23, 1977. Dorsett ran for 73 yards and one touchdown before the hometown fans. Pittsburgh made their record 6-4 with a 28-13 win. (AP Photo/R.C. Greenawalt)

Pittsburgh Steeler John Stallworth hauls in pass for quarterback Terry Bradshaw in the endzone for touchdown in the first quarter of Super Bowl game with the Dallas Cowboys in Miami Sunday, January 21, 1979. Cowboy defenders are safety Cliff Harris (43) and Preston Pearson (26). (Associated Press)

Opposing quarterbacks Terry Bradshaw (12), Pittsburgh Steelers, and Roger Staubach (12), Dallas Cowboys, greet each other after the National Football League's exhibition game in Texas Stadium in Irving, Texas, on Aug. 26, 1979. The Cowboys defeated the Steelers in the last six seconds of the game on a 47-yard field goal. (AP Photo)