Cowboys lose, 24-16, to Eagles in preseason opener

Cowboys lose, 24-16, to Eagles in preseason opener

DALLAS — Dallas Cowboys rookie quarterback Dak Prescott put on a clinic during the first preseason game against the Philadelphia Eagles on Saturday.The Cowboys trailed 14-0 early in the fourth quarter and didn’t finish the game.They opened up a 17-0 lead late in the third quarter.Prescott, who played in the preseason for the first time,…