Coach Jason Garrett saw all he needed out of quarterback Dak Prescott on just one drive. Prescott made the most of his brief appearance in the preseason opener for Dallas by throwing a 30-yard touchdown pass to rookie Michael Gallup on his only drive before the San Francisco 49ers rallied with two late touchdowns to beat the Cowboys 24-21 Thursday night. read more http://www.espn.com/nfl/recap?gameId=401030985