ARLINGTON, TX - AUGUST 29: Head coach Jason Garrett of the Dallas Cowboys looks on as the Cowboys work through pregame drills before taking on the Minnesota Vikings on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Tony Romo #9 of the Dallas Cowboys works through pregame warm up before taking the field against the Minnesota Vikings on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Tony Romo #9 of the Dallas Cowboys looks for an open receiver under pressure from Everson Griffen #97 of the Minnesota Vikings in the first quarter on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Terrance Williams #83 of the Dallas Cowboys carries the ball into the end zone against Gerald Hodges #50 of the Minnesota Vikings turnover score in the second quarter on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Teddy Bridgewater #5 of the Minnesota Vikings completes a pass turnover Jerick McKinnon #31 of the Minnesota Vikings under pressure from Jeremy Mincey #92 of the Dallas Cowboys in the first quarter against the Dallas Cowboys on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Lucky Whitehead #13 of the Dallas Cowboys celebrates after scoring a touchdown against the Minnesota Vikings in the second quarter on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Lucky Whitehead #13 of the Dallas Cowboys celebrates with Jason Witten #82 of the Dallas Cowboys after scoring a touchdown against the Minnesota Vikings in the second quarter on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Darren McFadden #20 of the Dallas Cowboys carries the ball against the Minnesota Vikings in the first half of a preseason game on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Taylor Heinicke #6 of the Minnesota Vikings carries the ball against Jack Crawford #58 of the Dallas Cowboys and Ryan Russell #99 of the Dallas Cowboys in the third quarter of a preseason game on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Minnesota Vikings v Dallas Cowboys
Adrian Peterson #28 of the Minnesota Vikings (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Jameill Showers #7 of the Dallas Cowboys scrambles with the ball against Babatunde Aiyegbusi #69 of the Minnesota Vikings and Stephen Goodin #78 of the Minnesota Vikings in the second half of a preseason game on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: The Dallas Cowboys Cheerleader perform in the second half of a preseason game as the Minnesota Vikings take on the Dallas Cowboys on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
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Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Teddy Bridgewater #5 of the Minnesota Vikings looks for an open receiver in the first quarter of a preseason game against the Dallas Cowboys on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
Minnesota Vikings v Dallas Cowboys
ARLINGTON, TX - AUGUST 29: Tony Romo #9 of the Dallas Cowboys works through pregame warm up before a preseason game against the Minnesota Vikings on August 29, 2015 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)