Monday NFL preview: Cowboys trying to get Dak Prescott ready

NFL Nation reporters assess the top storylines to watch for every team on Monday. NFC East | NFC North | NFC South | NFC West AFC East | AFC North| AFC South | AFC West NFC EAST Dallas Cowboys Coach Jason Garrett has not decided whether he will play Dak Prescott on Thursday in the preseason finale against the Texans. With Prescott elevated to the starter's role with Tony Romo out, the Cowboys have to balance the risk of him getting hurt with the reward of the rookie getting much-needed playing time. If the starting offensive line is not going to play, it would be wise to let Prescott sit and be ready for the regular-season opener against the Giants. Jameill Showers would start if Prescott sits. The Cowboys...