The Redskins (2-3), losing their eighth consecutive home game, were meanwhile left to deal with an ironic wound. There was abundant concern that Griffin was susceptible to injury when he was taking hard hits while running option plays frequently in his first three games.
But Shanahan scaled back the option over the last two weeks. Griffin didn't have a designed run play Sunday. He ended up getting hurt while scrambling because he couldn't find an open receiver — something that every quarterback does.
Team spokesman Tony Wyllie said the Heisman Trophy winner was examined by an independent neurologist before being sent home from the stadium and will be evaluated again Monday. Griffin also got a cut on his chin.
"When he wasn't really sure what the score was, what quarter it was, we knew he had a mild concussion," Shanahan said.
About three hours after the game, Griffin tweeted: "I'm ok and I think after all the testing I will play next week."
Cousins, a fourth-round pick from Michigan State, went three-and-out in his first possession. Sav Rocca shanked the punt, and the Falcons drove 47 yards to take a 14-10 lead on Jones' catch.
But Cousins put the Redskins ahead again about a minute later, when Santana Moss ran deep down the middle without a defender anywhere near him. The 77-yard pass made the score 17-14 early in the fourth quarter.
Ryan came back with two drives that gave the Falcons the win. Bryant's field goal tied the game, and Turner's run was the decisive score.
Cousins had two more chances to rally the Redskins, but Dunta Robinson and Thomas DeCoud picked him off to end Washington's final two drives.
"With Robert not being in there, definitely allowed them to change up their scheme," said Redskins running back Alfred Morris, who ran 115 yards on 18 carries. "They were flying downhill a lot faster. It definitely affected our running game. Once he wasn't in anymore, they were just able to pin their ears back."
NOTES: Washington K Billy Cundiff — already on thin ice after missing three field goals the previous week — was wide right from 31 yards in the second quarter. ... Falcons injuries: RB Antone Smith (hamstring) and LB Stephen Nicholas (ankle).
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