Today begins the defining era of Dak Prescott as the Cowboys quarterback. Cooper Rush showed everyone how good the Cowboys could be in high pressure situations, and that has put Dak's history of choking in big games front and center.
How Dak handles the next six games will tell if the run game bailed out Rush, or if Dak can really make the Cowboys better when he has to.
It's been easy for Dak to pad his stats playing in the worst division in the NFL; now we'll see what happens when he has everything in his favor and has to produce with the season on the line.