QB Prescott (calf) must clear 'threshold' to play

Though QB Dak Prescott, who's dealing with a right calf strain, looked good in practice Wednesday, coach Mike McCarthy said he must "cross the threshold" to play Sunday.
https://www.espn.com/nfl/story/_/id/32486904/dallas-cowboys-qb-dak-prescott-calf-strain-cross-threshold-play-sunday?utm_source=dlvr.it&utm_medium=blogger