Ray Renfro (26) Cleveland Browns back, catches pass good for about 12 yards just before he was tackled and brought down by Tom Franckhauser (32) of the Dallas Cowboys during first quarter of their game in the Cotton Bowl in Dallas on Oct. 16, 1960. Cleveland won 48 to 7. (AP Photo)

Lee Folkins (83) Dallas Cowboys end, tries to leap over upended Don Burroughs (45) Philadelphia Eagles back, but is pulled down by Eagles back Mike McLellan (23) in second period of Eagles - Cowboys pro-football game in Philadelphia on Nov. 26, 1962. Folkins had taken pass from back Don Meredith good for 15 yards and first down. Eagles won, 2-14. (AP Photo/Bill Ingraham)

Dallas Cowboys running back Don Perkins eludes Washington Redskins linebacker Chris Hanburger in a 27-20 loss at the Cotton Bowl on 11/19/1967. Dallas Cowboys - 1960's File Photos (AP Photo/NFL Photos)

Dallas Cowboys quarterback Don Meredith (17) gets set to throw a pass circa 1967. (Tony Tomsic via AP)

The Ice Bowl. 1967 NFL Championship Game between the Green Bay Packers and Dallas Cowboys. Game time temperature was 13 degrees below zero. The Packers won the game 21-17. (AP Photo by Vernon J. Biever)

Dallas Cowboys quarterback Craig Morton (14) looks to handoff during the Cowboys 16-13 loss to the Baltimore Colts in Super Bowl V on January 17, 1971 at the Orange Bowl in Miami, Florida. (AP Photo/NFL Photos)

Dallas Cowboys quarterback Roger Staubach (12) gets set to pass the ball during an NFL game against the New York Giants Oct. 10, 1976, in East Rutherford, N.J. (Tony Tomsic via AP)

Dallas Cowboys wide receiver Michael Irvin (88) makes a leaping catch behind Green Bay Packers cornerback Doug Evans (33) during an NFL game at Lambeau Field on November 23, 1977. The Packers defeated the Cowboys 45-17. (Peter Read Miller via AP)

Dallas Cowboys Hall of Fame defensive tackle Randy White in 1984. (AP Photo/NFL Photos)

Dallas Cowboys running back Tony Dorsett (33) tries to break past Brenard Wilson (22) a Philadelphia Eagles strong safety, in Irving, Texas on Sept. 16, 1984. Wilson managed to bring Dorsett down behind the line of scrimmage for a one-yard loss, in the final minutes of the first period. (AP Photo/David Breslauer)

Dallas Cowboys center Tom Rafferty (64) snaps the ball to Dallas Cowboys quarterback Gary Hogeboom (14) during the NFL football game against the New York Giants on Sept. 9, 1984 in East Rutherford, N.J. The Giants won the game 28-7. (AP Photo/Paul Spinelli)

The fate of the Dallas Cowboys' drive to the NFL playoffs is in the hands of quarterback Steve Beuerlein, shown in action in Sunday's game against Washington, November 26, 1991. After starter Troy Aikman was injured. Beuerlein guided the Cowboys to an upset in the game and will sub for Aikman who may miss a month with his knee injury. (AP Photo / Ron Edmonds)

Dallas Cowboys Hall of Fame wide receiver Michael Irvin (88) celebrates his 18-yard touchdown reception with Hall of Fame running back Emmitt Smith (22) during the Super Bowl XXVII NFL game against the Buffalo Bills in Pasadena, Calif., on January 31, 1993. The Cowboys defeated the Bills 52-17. (AP Photo/Paul Spinelli)

Dallas Cowboys quarterback Troy Aikman yells at teammate Eric Williams (unseen) after he was sacked by Philadelphia Eagles' William Fuller in the closing moments of the fourth quarter Sunday, Dec. 10, 1995, in Philadelphia's Veterans Stadium. The Eagles beat the Cowboys 20-17. (AP Photo/Tim Shaffer)

Dallas Cowboys, running back Emmitt Smith (22) turns up field, as Cowboys offensive linemen Nate Newton (61) blocks Green Bay defensive end Reggie White (92) during the first quarter of their NFC playoff game Sunday, Jan. 8, 1995 in Irving, Texas. The Cowboys won 35-9. (AP Photo/Pat Sullivan)

Dallas Cowboys linebacker Dexter Coakley (52) is seen in action during an NFL game against the Carolina Panthers Oct. 1, 2000, in Charlotte, N.C. (Allen Kee via AP)

Dallas Cowboys tight end Jason Witten (82) slips away from New York Giants cornerback Curtis Deloatch for a nine yard gain during the second quarter Sunday night, Jan. 2, 2005, at Giants Stadium in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Dallas Cowboys quarterback Drew Bledsoe (11) throws a pass in the first quarter against the Washington Redskins in Irving, Texas, Monday, Sept. 19, 2005. (AP Photo/Donna McWilliam)

Dallas Cowboys quarterback Tony Romo (9) passes during an NFL football game against the Oakland Raiders on Monday, Aug. 13, 2012, in San Francisco. The Cowboys won the game, 3-0. (AP Photo/Greg Trott)

Dallas Cowboys receiver Dez Bryant (88) during an NFL football game against the Carolina Panthers on Sunday, October 21, 2012, at Bank of America Stadium in Charlotte, North Carolina. The Cowboys defeated the Panthers, 19-14. (AP Photo/James D Smith)

Dallas Cowboys wide receiver Dez Bryant (88) and quarterback Dak Prescott (4) celebrate after a fourth quarter touchdown against the Minnesota Vikings during a NFL football game in Minneapolis, MN on Thursday, Dec 1, 2016. The Vikings defeated the Cowboys 17-15. (Kirby Lee/NFL)