Dak Prescott isn't shying from what shapes up as a prove-it year for the Cowboys

FRISCO, Texas (AP) — At the moment, quarterback Dak Prescott and coach Mike McCarthy don't have contracts beyond this season with the Dallas Cowboys. Same for six-time All-Pro right guard Zack Martin, No. 2 receiver Brandin Cooks and longtime Dallas pass rusher DeMarcus Lawrence....