ARLINGTON, Texas » Colt McCoy directed Washington to Kai Forbath’s 40-yard field goal in overtime and Dallas was unable to answer after Tony Romo returned from an apparent injury, sending the Redskins to a 20-17 victory on Monday night that snapped the Cowboys’ six-game winning streak.

McCoy, the former Texas star playing at the home of the Cowboys for the first time since his final college game in his home state, calmly drove the Redskins (3-5) to the winning points.

The Cowboys (6-2) had one last chance, but didn’t get a first down. Romo’s final pass on fourth down was knocked away by Bashaud Breeland.

Romo left after getting sacked by Keenan Robinson in the third quarter. He lay motionless for several minutes but returned for the final Dallas drive of regulation.

The 34-year-old Romo, who had surgery for a herniated disk last December, reached for his back after the hit and stayed flat on the ground before trainers rolled him to his side. He walked to the locker room mostly under his own power.

He played through the injury against the Redskins last year, leading a winning drive that kept the Cowboys’ playoff hopes alive. But he had to sit out a season-ending loss to Philadelphia that kept Dallas out of the postseason for the fourth straight year.

This time, it was McCoy getting the win in his first start in almost three years after beginning the night with a career record of 6-15.

McCoy, who was 25 of 30 for 299 yards, threw 23 yards to Pierre Garcon to get the winning drive going. On third-and-3 from midfield, he fled the pocket, pointed to Jordan Reed to run up the field and lofted a pass that Reed caught while tiptoeing inbounds.

Another 16-yarder to Reed made Forbath’s job much easier.

Cowboys running back DeMarco Murray extended the record he took from Jim Brown a week ago with his eighth straight 100-yard rushing game to start the season. He also had 80 yards receiving.