ORCHARD PARK, N.Y. (AP) _ Doug Flutie, taking over for injured Rob Johnson for the second time in two weeks, sparked the Buffalo Bills to a 27-24 overtime victory over the winless San Diego Chargers on Sunday.

Set up by Henry Jones' interception of Jim Harbaugh's pass, Flutie marched the Bills 31 yards for Steve Christie's 46-yard field goal with 6:34 remaining. Curiously, Christie got a second chance to win the game after his first attempt _ which bounced off the right goalpost _ didn't count because the play had been called dead when Buffalo center Jerry Ostroski false-started.

Christie's second attmempt just sneaked over the bar.

Christie forced overtime with a 29-yard field goal with seven seconds left in regulation.

Johnson, who appeared to hurt his passing arm on the final play of Buffalo's first possession in overtime, watched from the sideline after a brief trip to the locker room.

The Bills (3-3) snapped a three-game losing streak.

The Chargers (0-7), who squandered a 10-point fourth-quarter lead, are off to their worst start since opening the 1975 season 0-11.