Dallas Cowboys quarterback Tony Romo (9) before an NFL regular season game against the Washington Redskins on Thursday, Nov. 24, 2016 in Arlington, TX. The Cowboys won, 31-26. (Ric Tapia via AP)

Dallas Cowboys quarterback Tony Romo (9) rests during an NFL preseason game against the Los Angeles Rams on Saturday, August 13, 2016, in Los Angeles, Ca. The Rams won the game, 28-24. (Greg Trott via AP)

Dallas Cowboys quarterback Tony Romo (9) celebrates after throwing a touchdown pass during an NFL preseason football game against the Miami Dolphins on Friday, Aug. 19, 2016, in Arlington, Texas. (Aaron M. Sprecher via AP)

Dallas Cowboys' Tony Romo after an NFL divisional playoff football game against the Green Bay Packers Sunday, Jan. 15, 2017, in Arlington, Texas. The Packers won 34-31. (AP Photo/Michael Ainsworth)

Dallas Cowboys' Tony Romo talks to Dak Prescott before an NFL divisional playoff football game against the Green Bay Packers Sunday, Jan. 15, 2017, in Arlington, Texas. (AP Photo/Michael Ainsworth)

Dallas Cowboys' Tony Romo on the sidelines during an NFL football game against the Philadelphia Eagles, Sunday, Jan. 1, 2017, in Philadelphia. (AP Photo/Matt Rourke)

Dallas Cowboys' Tony Romo in action during an NFL football game against the Philadelphia Eagles, Sunday, Jan. 1, 2017, in Philadelphia. (AP Photo/Matt Rourke)

Dallas Cowboys' Tony Romo speaks during a news conference after an NFL football game against the Philadelphia Eagles, Sunday, Jan. 1, 2017, in Philadelphia. (AP Photo/Michael Perez)

Dallas Cowboys' Tony Romo walks the field during the first half of an NFL football game against the Philadelphia Eagles, Sunday, Jan. 1, 2017, in Philadelphia. (AP Photo/Matt Rourke)

Tony Romo appears on stage at the 50th annual Academy of Country Music Awards at AT&T Stadium on Sunday, April 19, 2015, in Arlington, Texas. (Photo by Chris Pizzello/Invision/AP)

Dallas Cowboys quarterback Tony Romo spins a basketball on his finger as teammate tight end Jason Witten, second from right, looks on during a timeout in the second half of an NBA basketball game between the Dallas Mavericks and San Antonio Spurs, Tuesday, March 24, 2015, in Dallas. Dallas won 101-94. (AP Photo/Brandon Wade)

Dallas Cowboys' Tony Romo before the NFL Football Pro Bowl Sunday, Jan. 25, 2015, in Glendale, Ariz. (AP Photo/David J. Phillip)

Dallas Cowboys' Tony Romo is presented a jersey after being picked to play on Team Irvin, during the NFL football Pro Bowl draft Wednesday, Jan. 21, 2015, in Phoenix. (AP Photo/David J. Phillip)

Candice Crawford, left, and Tony Romo, of the Dallas Cowboys, arrive at the 4th annual NFL Honors at the Phoenix Convention Center Symphony Hall on Saturday, Jan. 1, 2015. (Photo by Jordan Strauss/Invision for NFL/AP Images)

Dallas Cowboys quarterback Tony Romo (9) walks off the field with Green Bay Packers outside linebacker Clay Matthews after their NFL divisional playoff football game Sunday, Jan. 11, 2015, in Green Bay, Wis. The Packers won 26-21. (AP Photo/Matt Ludtke)

Dallas Cowboys quarterback Tony Romo fumbles after his arm was hit by Green Bay Packers outside linebacker Julius Peppers during an NFL divisional playoff football game against the Green Bay Packers Sunday, Jan. 11, 2015, in Green Bay, Wis. (AP Photo/Matt Ludtke)

Dallas Cowboys quarterback Tony Romo (9) walks off the field after an NFL divisional playoff football game against the Green Bay Packers Sunday, Jan. 11, 2015, in Green Bay, Wis. The Packers won 26-21. (AP Photo/Nam Y. Huh)

Dallas Cowboys quarterback Tony Romo (9) walks to the field before his game against the Green Bay Packers in an NFL divisional playoff football game Sunday, January 11, 2015 at Lambeau Field in Green Bay, Wisconsin. The Packers defeated the Cowboys, 26-21, to advance to the NFC Championship game. (AP Photo/James D Smith)

Tony Romo, de los Cowboys de Dallas, festeja tras lanzar un pase de anotaci�n frente a los Lions de Detroit en el partido de primera ronda de las postemporada disputado el domingo 4 de enero de 2015 (AP Foto/Tony Guti�rrez)

Dallas Cowboys quarterback Tony Romo (9) celebrates after leading his team to a touchdown during an NFL wild card playoff football game against the Detroit Lions at AT&T Stadium on Sunday January 4, 2015 in Arlington, Texas. Dallas won 24-20. (AP Photo/Aaron M. Sprecher)

Dallas Cowboys quarterback Tony Romo (9) hugs head coach Jason Garrett following an NFL wild card playoff football game against the Detroit Lions at AT&T Stadium on Sunday January 4, 2015 in Arlington, Texas. Dallas won 24-20. (AP Photo/Aaron M. Sprecher)

Dallas Cowboys quarterback Tony Romo (9) celebrates after an NFL wildcard playoff football game against the Detroit Lions, Sunday, Jan. 4, 2015, in Arlington, Texas. The Cowboys won 24-20. (AP Photo/Brandon Wade)

Dallas Cowboys quarterback Tony Romo (9) attempts to fight off a sack by Denver Broncos' Shaun Phillips (90) late in the fourth quarter of an NFL football game Sunday, Oct. 6, 2013, in Arlington, Texas. The Broncos won 51-48. (AP Photo/Tony Gutierrez)

Dallas Cowboys head coach Jason Garrett and Tony Romo on the sidelines at a NCAA mens basketball game between the Louisville Cardinals and SMU Mustangs, Wednesday, March 5th, 2014 @ Moody Coliseum in Dallas, Texas.. (Cal Sport Media via AP Images)

Dallas Cowboys quarterback Tony Romo, right, makes a cell phone photos with a fan in the tunnel before the NBA basketball game between the Miami Heat and Dallas Mavericks Tuesday, Feb. 18, 2014, in Dallas. (AP Photo/LM Otero)

Dallas Cowboys quarterback Tony Romo, center, watches the Atlanta Hawks play the Oklahoma City Thunder in an NBA basketball game, Monday, Jan. 27, 2014, in Oklahoma City. (AP Photo/Alonzo Adams)

Dallas Cowboys quarterback Tony Romo (9) celebrates after throwing a touchdown pass during an NFL football game against the Green Bay Packers at AT&T Stadium on Sunday December 15, 2013 in Arlington, Texas. Green Bay won 37-36. (AP Photo/Aaron M. Sprecher)

Dallas Cowboys quarterback Tony Romo (right) talks with Philadelphia Eagles quarterback Matt Barkley (left) after an NFL football game against the Philadelphia Eagles on Sunday, October 20, 2013, at Lincoln Financial Field in Philadelphia, Pennsylvania. The Cowboys defeated the Eagles, 17-3. (AP Photo/James D. Smith)

File - In this Nov. 24, 2013 file photo, Dallas Cowboys quarterback Tony Romo (9) gestures while leaving the field after defeating the New York Giants 24-12 in an NFL football game, in East Rutherford, N.J. The winter blast that hit North Texas forced the Cowboys indoors when they were hoping to keep working outside in preparation for a bitterly cold Monday night in Chicago. The Cowboys don�t mind practicing in the elements because it worked pretty well leading up to a frigid win at the New York Giants two weeks ago. (AP Photo/Bill Kostroun, File)

Dallas Cowboys quarterback Tony Romo (9) and guard Derrick Dockery (76) celebrate Romo's touchdown pass during the first half of an NFL football game against the Washington Redskins on Sunday, Dec. 30, 2012, in Landover, Md. (AP Photo/Evan Vucci)

Dallas Cowboys quarterback Tony Romo (9) passes the ball as New Orleans Saints defensive end Will Smith (91) moves in during the first half of an NFL football game on Sunday, Dec. 23, 2012, in Arlington, Texas. (AP Photo/Brandon Wade)

Dallas Cowboys quarterback Tony Romo drops back to pass against the Seattle Seahawks in the second half of an NFL football game, Sunday, Sept. 16, 2012, in Seattle. (AP Photo/John Froschauer)

Dallas Cowboys quarterback Tony Romo (9) gets past New York Giants middle linebacker Chase Blackburn (93) to score a touchdwon during the second half of an NFL football game, Sunday, Oct. 28, 2012, in Arlington, Texas. (AP Photo/Sharon Ellman)

Dallas Cowboys Tony Romo during game action in a preseason game verse the Arizona Cardinals on Saturday August 9, 2003 in Tempe, AZ. (AP Photo/Kevin Reece)

Dallas Cowboys quarterback Tony Romo (9) runs past Miami Dolphins safety Renaldo Hill for a first down in the second quarter during a football game at the Dolphin Stadium in Miami Sunday, Sept. 16, 2007. (AP Photo/Lynne Sladky)

Dallas Cowboys' Tony Romo, left, bobbles the snap as kicker Martin Gramatica steps in for the kick with 1:19 left in the game against Seattle Seahawks in an NFC wild card playoff football on Jan. 6, 2007 in Seattle. The Seahawks won, 21-20. Cowboys have not won a playoff game since 1996. (AP Photo/John Froschauer)

Dallas Cowboys' Tony Romo (9) smiles as he walks off the field following his first career start against the Carolina Panthers in an NFL football game in Charlotte, N.C., Sunday, Oct. 29, 2006. The Cowboys won 35-14. Romo joined the list of undrafted quarterbacks to start in the NFL. (AP Photo/Chuck Burton)

Dallas Cowboys quarterback Tony Romo (9) trots off the field in the 4th quarter of their football game against the Houston Texans in Irving, Texas, Sunday, Oct. 15, 2006. Romo finished 2 for 2 in passing for 35-yards in his first game NFL regular season game as quarterback. (AP Photo/Tony Gutierrez)

Dallas Cowboys quarterback Tony Romo (9) walks off the field with the Galloping Gobbler trophy after The Cowboys beat the Tampa Bay Buccaneers 38-10 during an NFL football game in Irving, Texas, Thursday, Nov. 23, 2006. Romo threw for 5 touchdown in the game tying the team mark set by Troy Aikman on Sept. 12, 1999. (AP Photo/Tony Gutierrez)

Dallas Cowboys quarterback Tony Romo (9) runs to the right looking for a receiver in the 2nd half of a football game against the Tampa Bay Buccaneers, Thursday, Nov. 23, 2006, in Irving, Texas. Romo threw for 5 touchdown in the game tying the team mark set by Troy Aikman on Sept. 12, 1999. (AP Photo/Tony Gutierrez)

Tony Romo #9 of the Dallas Cowboys looks for a receiver as the AFC and NFC All-Stars compete in the 2007 NFL Pro Bowl at Aloha Stadium on February 10, 2007 in Honolulu, Hawaii. The AFC defeated the NFC 31-28. (AP Photo/Paul Spinelli)

Dallas Cowboys quarterback Tony Romo responds to questions about his broken pinkie finger while sitting in front of his locker at the Cowboys training facility in Irving, Texas, Wednesday, Oct. 22, 2008. Romo said that he will not play Sunday against the Tampa Bay Buccaneers. (AP Photo/Tony Gutierrez)

Dallas Cowboys quarterback Tony Romo (9) celebrates his touchdown pass against the New Orleans Saints in the first half of an NFL football game in New Orleans, Saturday, Dec. 19, 2009. The Cowboys upset the Saints 24-17, for the Saints first lost of the season in week 15. (AP Photo/Bill Haber)

Dallas Cowboys quarterback Tony Romo (9) looks to pass during the first half of an NFL football game against Tennessee Titans Sunday, Oct. 10, 2010 in Arlington, Texas. (AP Photo/Mike Fuentes)

Dallas Cowboys quarterback Tony Romo smiles as he throws the first pitch before a baseball game between the Chicago Cubs and the Arizona Diamondbacks on Sunday, May 11, 2008 in Chicago. (AP Photo/Nam Y. Huh)

Carrie Underwood, nominated for top female vocalist, arrives with boyfriend, Dallas Cowboys quarterback Tony Romo, at the 42nd Annual Academy of Country Music Awards on Tuesday, May 15, 2007, in Las Vegas. (AP Photo/Jae C. Hong)

Dallas Cowboys quarterback Tony Romo (9) falls back to pass during the first half of an NFL football game against the Washington Redskins Thursday, Nov. 22, 2012 in Arlington, Texas. (AP Photo/Matt Strasen)

Dallas Cowboys quarterback Tony Romo (9) celebrates with team mascot, Rowdy after beating the Philadelphia Eagles 38-33 at NFL football game Sunday, Dec. 2, 2012 in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys first year quarterback Tony Romo (9) listens to head coach Bill Parcells discuss a drill during afternoon practice at training camp in San Antonio, Sunday, July 27, 2003. (AP Photo/Donna McWilliam)

Dallas Cowboys quarterback Tony Romo, left, smiles as team owner Jerry Jones makes a point during a news conference at the football team's headquarters in Irving, Texas, Tuesday, Oct. 30, 2007. Romo signed a six-year, $67 million contract. (AP Photo/LM Otero)

Dallas Cowboys' Tony Romo (9) and head coach Wade Phillips paces the sideline during a timeout in their game against the Arizona Cardinals in the fourth quarter of an NFL football game Sunday, Oct. 12, 2008, in Glendale, Ariz. The Cardinals defeated the Cowboys 30-24 in overtime. (AP Photo/Ross D. Franklin)

Dallas Cowboys quarterback Tony Romo (9) listens to coach Jason Garrett (right) during an NFL football game against the Philadelphia Eagles Sunday, October 30, 2011 at Lincoln Financial Field in Philadelphia, Pennsylvania. The Eagles won the game, 34-7. (AP Photo/James D Smith)

Dallas Cowboys quarterback Tony Romo (center) watches from the sidelines after breaking his clavicle bone during an NFL football game against the New York Giants, Monday, October 25, 2010 at Cowboys Stadium in Arlington, Texas. The Giants won the game, 41-35. (AP Photo/James D Smith)

Quarterback Tony Romo #9 of the Dallas Cowboys throwing the ball in the first quarter against the Washington Redskins at FedExField on November 5, 2006 in Landover, Maryland. The Redskins defeated the Cowboys 22-19. (AP Photo/David Drapkin)

Dallas Cowboys quarterback Tony Romo (9) reacts after scoring on a 15-yard run against the St. Louis Rams in the second quarter of their NFL football game, Sunday, Sept. 30, 2007, in Irving Texas. (AP Photo/Matt Slocum)

Dallas Cowboys quarterback Tony Romo #9 during the NFL Game against the Philadelphia Eagles on September 15, 2008. The Cowboys beat the Eagles 41-37 at Texas Stadium in Irving, Texas. (AP Photo/Brian Garfinkel)

Philadelphia Eagles safety Brian Dawkins #20 knocks the ball away from Dallas Cowboys quarterback Tony Romo #9 for a fumble during the NFL Game against the Dallas Cowboys on December 28th, 2008. The Philadelphia Eagles won 44-6 at Lincoln Financial Field in Philadelphia, Pennsylvania. (AP Photo/Brian Garfinkel)

Dallas Cowboys quarterback Tony Romo (9) throws a pass during a NFL football game against the Buffalo Bills, Sunday, November 13, 2011 in Arlington, Texas. The Cowboys won the game 44-7. Romo finished the game 22 out of 26 for a carer high passing completion percentage of 88.5. (AP Photo/Paul Jasienski)

Dallas Cowboys quarterback Tony Romo (9), of the NFC team, signs an autograph for fan Jeanalin Rehn after an NFC practice for the Pro Bowl football game on Thursday, Feb. 7, 2008, in Kapolei, Hawaii. (AP Photo/Paul Sakuma)

Dallas Cowboys quarterback Tony Romo (9) calls a play in the huddle during an NFL football game against the Cincinnati Bengals on Sunday, December 9, 2012, at Paul Brown Stadium in Cincinnati, Ohio. The Cowboys defeated the Bengals, 20-19. (AP Photo/James D Smith)

Dallas Cowboys head coach Jason Garrett (right) slaps hands with quarterback Tony Romo (9) before an NFL football game against the Pittsburgh Steelers on Sunday, December 16, 2012, at Cowboys Stadium in Arlington, Texas. The Cowboys defeated the Steelers in overtime, 27-24. (AP Photo/James D Smith)

Tony Romo chips onto a green during the American Century Golf Championship at Edgewood Tahoe Golf Course in Stateline, Nev., on Saturday, July 18, 2009. (AP Photo/Brad Horn)