Dallas Cowboys running back Phillip Tanner (34) runs the ball for a nine-yard gain in the second quarter against the Miami Dolphins during the Pro Football Hall of Fame exhibition football game, Sunday, Aug. 4, 2013, in Canton, Ohio. (AP Photo/Scott R. Galvin)

Miami Dolphins Joe Philbin congratulates Dallas Cowboys Jason Garrett after the 2013 Pro Football Hall of Fame game at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins Matt Moore (8) congratulates Dallas Cowboys Tony Romo (9) after the 2013 Pro Football Hall of Fame game at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys' Jared Green (85) and Dez Bryant celebrate after Green caught a 32-yard pass in the fourth quarter at the Pro Football Hall of Fame exhibition football game, Sunday, Aug. 4, 2013, in Canton, Ohio. The Cowboys won 24-20. (AP Photo/David Richard)

Dallas Cowboys Tony Romo (9) walks off the field after the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys Alex Tanney (7) hands the ball to Randle Joseph (35) during the 2013 Pro Football Hall of Fame game against the Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins Keenan Davis (3) celebrates with teammates during the 2013 Pro Football Hall of Fame game against Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Alex Tanney (7) calls a play during the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins Jonas Gray runs the ball during the 2013 Pro Football Hall of Fame game against the Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins head coach Joe Philbin talks to referees during the 2013 Pro Football Hall of Fame game against the Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Joseph Randle (35) runs the ball during the 2013 Pro Football Hall of Fame game against the Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys kicker Dan Bailey (5) kicks a 49-yard field goal in the second quarter against the Miami Dolphins at the Pro Football Hall of Fame exhibition football game, Sunday, Aug. 4, 2013, in Canton, Ohio. (AP Photo/Scott R. Galvin)

Miami Dolphins wide receiver Brian Tyms (85) gains 6 yards as Dallas Cowboys defensive back Brandon Underwood (23) tries to stop Tyms in the second quarter at the Pro Football Hall of Fame exhibition football game, Sunday, Aug. 4, 2013, in Canton, Ohio. (AP Photo/Scott R. Galvin)

Miami Dolphins running back Jonas Gray (32) strong arms Dallas Cowboys defensive back J.J. Wilcox (27) in the second quarter at the Pro Football Hall of Fame exhibition football game Sunday, Aug. 4, 2013, in Canton, Ohio. (AP Photo/David Richard)

Dallas Cowboys Nick Stephens (3) runs the ball during the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys Phillip Tanner (34) runs the ball during the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins Matt Moore (8) is sacked during the 2013 Pro Football Hall of Fame game against Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins before the 2013 Pro Football Hall of Fame game against the Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins quarterback Ryan Tannehill (17) hands the ball to Lamar Miller (26) during the 2013 Pro Football Hall of Fame game against Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Lance Dunbar (25) runs with the ball during the 2013 Pro Football Hall of Fame game against the Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys quarterback Nick Stephens (3) throws the ball during the 2013 Pro Football Hall of Fame game against XXX at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

General stadium view during the 2013 Pro Football Hall of Fame game at Fawcett Stadium, Miami Dolphins vs. Dallas Cowboys, in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Miami Dolphins run onto the field before the 2013 Pro Football Hall of Fame game against the Dallas Cowboys at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Jason Garrett looks out on the field before the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys quarterback Kyle Orton (18) during the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)

Dallas Cowboys head coach Jason Garrett walks during the 2013 Pro Football Hall of Fame game against Miami Dolphins at Fawcett Stadium in Canton, Oh., on Aug. 3, 2013. (Ben Liebenberg/NFL)