Robert Griffin III went head-first instead of sliding, so when the ball popped out it was a fumble.
Aldrick Robinson had a touchdown catch in his hands, but he couldn't quite maintain possession as he hit the ground in the end zone.
Thanks to the turf, the Detroit Lions ended 74 years of failure in the nation's capital.
The pair of fourth-quarter bobbles sent the Lions on their way to a 27-20 win over the Washington Redskins on Sunday, dropping Griffin and the defending NFC East champs to 0-3.
Matthew Stafford completed 25 of 42 passes for 385 yards with two touchdowns and one interception, and Calvin Johnson and Nate Burleson both had 100 yards receiving for the Lions (2-1).
They beat the Redskins on the road for the first time since 1939, a 21-game streak that comes to a halt as the second-longest in NFL history.
Detroit's last win away from home in the series came in 1935 against the Boston Redskins, two years before the move to Washington.
The score was tied a...