The Redskins said Griffin sustained a mild concussion when he was hit midway through the third quarter. On third and goal at the three-yard line, he rolled right against Atlanta and tried to tuck the ball and run. While in the process of sliding toward the sideline, he was drilled in the head by Falcons linebacker Sean Witherspoon. It was a legal hit because Griffin was technically a runner at the time, and the play was recorded as a sack for a loss of two.
Griffin lay face down on the turf for a few moments before groggily climbing to his feet and walking slowly across the field to the Washington sideline. He sat on the bench, where the medical staff stitched his chin. He was walked to the locker room, briefly reemerged, then headed back inside.
Mike Shanahan said.
Cassel was injured when hit by Baltimore's Haloti Ngata while completing a pass in the fourth quarter.
The Chiefs quarterback had four turnovers against the Ravens, and some in the crowd at Arrowhead Stadium cheered when he lay hurt on the turf.
Kansas City tackle Eric Winston said he was sickened by that fan reaction.
"We are athletes. We are not gladiators," Winston said. "This isn't the Roman Colosseum. People pay their hard-earned money to come in here. I believe they can boo, they can cheer, they can do whatever they want. . . .
"But when you cheer somebody getting knocked out, I don't care who it is, and just so happened to be Matt Cassel, it's 100% sickening. I've been in some rough times on some rough teams; I've never been so embarrassed in my life to play football, than at that moment right there."
After losing at Minnesota, the San Francisco 49ers regrouped for a week in Youngstown, Ohio, a planned layover on their way to New York for a game against the Jets.
Apparently, the 49ers found some answers there.
Since, they've outscored the Jets and Buffalo Bills by a combined 79-3, and Sunday the 49ers rolled up a franchise-record 621 yards.
Atlanta . . . and also-rans
It's only October, and the Falcons are already running away with the NFC South. They are 5-0 for the first time in franchise history, and no one else in the division has more than one victory.
After blowing leads and losing in overtime in consecutive weeks, the Dolphins finally slammed the door on an opponent, securing a 17-13 victory at Cincinnati with a late interception.
Rookie quarterback Ryan Tannehill played turnover-free football and notched a 92.3 passer rating, the best of his young career.
Miami's defense hasn't allowed a 100-yard rusher in 19 games.
Pittsburgh's defense played well in a 16-14 victory over Philadelphia, but the Steelers had some significant injury setbacks in the opening quarter.
Safety Troy Polamalu, who had missed the previous two games because of a calf strain, again left because of a calf injury. Outside linebacker LaMarr Woodley, who missed six games last season because of a hamstring injury, encountered the same problem Sunday and had to leave.
With their 41-27 blowout of Cleveland, the New York Giants have won eight consecutive games against AFC teams, including a victory over New England in Super Bowl XLVI.
Still remaining on the Giants' schedule is the rest of the AFC North, with upcoming games against Pittsburgh (Week 9), Cincinnati (Week 10) and Baltimore (Week 16).
Next stop: Canton
If win-loss records were kept for quarterbacks the way they are for pitchers, Tom Brady would be 9-4 in games against Manning, counting New England's 31-21 victory over Denver.
Sunday's game was only the second pitting quarterbacks who have presided over 125 victories in their careers, the first coming in 1998 when Dan Marino's Dolphins played John Elway's Broncos.
The Associated Press contributed to this report.