Mistakes cost the Steelers a last-second loss to the Cowboys, 20-17

PITTSBURGH — The Pittsburgh Steelers felt like they fought Sunday night. The offense held a late lead, but the defense couldn’t hold on as Jalen Tolbert caught a four-yard touchdown catch from Dak Prescott on fourth down in the final 30 seconds to help Dallas defeat Pittsburgh 20-17 . Pat Freiermuth caught a 6-yard touchdown catch from Justin Fields in the final five minutes to give Pittsburgh a brief 17-13 lead, but the advantage was short-lived. Pittsburgh’s No. 2 defense forced three turnovers and blocked a field goal, but allowed 445 yards and couldn’t keep Tolbert out of the end zone on the final play of the Cowboys’ final drive, as he capped a play of 15, 70 yard series. Pittsburgh has lost two games in a row after a 3-0 start.