After Dallas (3-3) scored on its opening drive for the fifth time in six games this season, the Redskins responded by going 78 yards on 13 plays in more than 7½ minutes. They had to settle for the first of Kai Forbath's three field goals after Griffin was tackled at the 2 on a third-and-goal scramble from the 9.
Griffin was 3-of-4 passing for 45 yards on the opening drive, the lone incompletion a drop by running back Alfred Morris that likely would have been a touchdown.
Morris busted loose for a 45-yard TD late in the third quarter, trimming Dallas' lead to 21-16 a play after safety Barry Church was penalized for unnecessary roughness when he hit Griffin as the quarterback scrambled out of bounds.
It was the second time in the quarter that Church was penalized for a hit on Griffin along the sideline.
This was much different than Griffin's first pro game against the Cowboys, when he threw for 301 yards and four TDs in a 38-31 victory on Thanksgiving last year.
That was part of a seven-game winning streak for the Redskins that included a winner-take-all regular-season finale against Dallas for the division title.
There were flags along the Redskins sideline after Harris' punt return with 2:26 left in the first half. But the penalty was for someone not in uniform on the Redskins bench inadvertently bumping into an official during the play. The score stood and the unsportsmanlike conduct penalty was enforced on the kickoff.
Another Washington penalty provided Harris with a second chance at a return. The Redskins were flagged for illegal motion, and Dallas accepted the penalty that forced them to kick again, setting up the fifth-longest punt return in Cowboys history.
After Forbath's 33-yard field goal in the third quarter, Harris took the ensuing kickoff 5 yards deep in the end zone. He took off down the right sideline — again racing past the Washington bench — before finally being pushed out of bounds by E.J. Biggers at the 15.
Two plays later, Tony Romo threw a 15-yard TD to rookie Terrance Williams, who made a nifty catch to get both feet in bounds in the back corner of the end zone.
A week after having the first 500-yard passing game in Cowboys history during a 51-48 loss to Peyton Manning and Denver, Romo finished 18 of 30 for 170 yards.
AP NFL website: www.pro32.ap.org