Prescott throws TD pass to Tolbert with 20 seconds left to lift Cowboys past Steelers, 20-17

PITTSBURGH (AP) — Dak Prescott drifted to his left, then drifted some more. On a seemingly endless night, what was another couple of seconds going to hurt?With a flick of the wrist as T.J. Watt and the rest of the Pittsburgh defense closed in, the NFL's highe…