Posted by ESPN.com's Tim Graham
For those out there wondering if the Buffalo Bills are for real, you can start believing now.
The Bills rebounded from their ugly, pre-bye loss to the Arizona Cardinals to defeat the resurgent San Diego Chargers, 23-14, in Ralph Wilson Stadium.
The Bills are atop the AFC East with a 5-1 record. The other division teams, meanwhile, can't exactly be described as scintillating
The Bills haven't gotten off to that hot of a start since 1995, and they haven't played a divisional opponent. They'll visit the Miami Dolphins next Sunday.
Trent Edwards needed to clear no cobwebs. In his first game since suffering a concussion, Edwards was masterful. He completed 25 of 30 passes for 261 yards and one touchdown without an interception. He used seven different receivers.
But the game MVP might be linebacker Kawika Mitchell, who intercepted a Philip Rivers pass in the end zone, preventing the Chargers from taking a lead in the final few minutes. Mitchell also forced a fumble to end the Chargers' final possession.
It was another balanced performance from the NFL's most-balanced club.