ORCHARD PARK — Three was the key for Robert Griffin III.
The Washington Redskins rookie quarterback needed only three passes on his third and final drive to show glimpses of stardom in his much-anticipated NFL preseason debut Thursday night.
After a muffed handoff and no first downs in his first two series, RG3 found his rhythm by completing his final three passes for 58 yards, capped by a 20-yard touchdown to Pierre Garcon in a 7-6 win over the Buffalo Bills.
Garcon celebrated by doing a front-first somersault in the end zone. And he was quickly joined by Griffin, who raced over to congratulate him with a leap in the air. With 5:54 left in the first quarter, it was the go-ahead score after the Redskins (No. 25 in the AP Pro32) fell behind 3-0.
It was an eventful cameo appearance for the Heisman Trophy winner, who was drafted with the No. 2 pick out of Baylor. Griffin finished going 4 of 6 for 70 yards and a lost fumble.
"It felt extremely good to come out and play," Griffin said. "Coach did a good job calling plays, got me in a rhythm and helped get the offense in a rhythm on that third drive."
Defensive end Mario Williams made a debut of his own for the Bills (No. 19) in his first game since signing a six-year, $100 million contract in free agency in March. Williams, the highest-paid defensive player in NFL history, and the Bills' new-look defensive front was solid in limiting the Redskins to 11 yards and no first downs in the first two series.
The trouble for Buffalo came on offense, which was sloppy and lacked finish.
Starter Ryan Fitzpatrick went 6 for 14 for 61 yards, and squandered a scoring opportunity when the Bills got the ball at the Redskins 21 following Griffin's fumble. The Bills were undone by a false start penalty and an illegal formation that negated what would've been a 20-yard touchdown pass to Stevie Johnson.