Two second-half defensive scores put Kansas City ahead and the Chiefs remained the NFL's only undefeated team with a 23-13 victory Sunday at Buffalo.
The Chiefs improved to 9-0 but only after an early scare by the Bills, who saw rookies Jeff Tuel and Marquis Goodwin combine for a 59-yard touchdown pass in the first quarter to open the scoring.
Buffalo led 10-3 and the hosts were poised to stretch their lead in the third quarter before Kansas City's Sean Smith intercepted a Tuel pass and returned it 100 yards for a touchdown that pulled the Bills level at 10-10.
"It was like Christmas. You go downstairs as a little kid and there's a big box right there. That's how I felt," Smith said of the play. "He threw it right to me. The main thing I just wanted to do was focus and catch the ball because I knew once I caught it that, no one was catching me."
The Chiefs' defense stopped Buffalo on downs to take possession later in the third to set up the first of three field goals by Kansas City's Ryan Succop.
After a Bills field goal to equalize, Buffalo receiver T.J. Graham made a catch over the middle but Kansas City's Marcus Cooper knocked the ball out of his grasp and Tamba Hali scooped up the fumble and ran 11 yards for the go-ahead touchdown with 12:47 to play.
Buffalo outgained Kansas City 470-210 in total yardage but the Chiefs produced their fourth and fifth defensive touchdowns of the season. The Chiefs lead the NFL with 15 more turnovers forced than surrendered.
Steven Hauschka's 27-yard field goal just 6:47 into overtime capped the largest comeback in Seattle Seahawks history as they rallied to beat winless Tampa Bay 27-24. The host Seahawks fell behind 21-0 but scored the last 20 points to stand 8-1. The Buccaneers fell to 0-8.
Tom Brady threw for 432 yards and four touchdowns to lead New England to a 55-31 home victory over Pittsburgh despite 400 passing yards and four touchdowns by Ben Roethlisberger in a losing cause. The Patriots' point total and 610 total yards were the most ever surrendered by the Steelers in a game.
Nick Foles, coming back from a concussion, matched an NFL record with seven touchdown passes in a game to lead Philadelphia over host Oakland 49-20. He became the seventh quarterback with seven TD tosses in a contest, the first since Denver's Peyton Manning in September.
Indianapolis rallied from a 21-3 half-time deficit to win 27-24 at Houston, a comeback that came after Texans coach Gary Kubiak collapsed while walking off the field at half-time.
Kubiak was rushed to a nearby hospital, and defensive coordinator Wade Phillips took over coaching duties in the third and fourth quarters.
Andrew Luck threw for three second-half touchdowns as the Colts improved to 6-2.
Darrel Young made his third touchdown run from four yards in overtime to give Washington a 30-24 victory over San Diego. Redskins defenders stopped the Chargers three times from the one-yard line in the last 21 seconds of regulation to reach overtime.
Dwayne Harris caught a 7-yard touchdown pass from Tony Romo with 35 seconds to play to give Dallas a 27-23 victory over visiting Minnesota. Romo went 34-for-51 for 337 yards and two touchdowns for the NFC East division leaders.
"We did a really good job in the second half," Cowboys coach Jason Garrett said. "The first half, we weren't in the rhythm we wanted, but we made some good adjustments in the second half and that last drive was great."
Minnesota's Adrian Peterson ran 25 times for 140 yards but the Vikings lost for the seventh time in eight games.
Cam Newton ran for one touchdown and threw for another to spark Carolina's 34-10 victory over Atlanta. The Panthers (5-3) won their fourth game in a row while the Falcons (2-6) fell to 0-4 on the road this year.
Chris Ivory ran for 139 yards and a touchdown against his former New Orleans teammates to spark the New York Jets over the Saints 26-20. The Jets, who also had a touchdown run from Geno Smith, improved to 5-4 while the Saints fell to 6-2 and lost star rusher Darren Sproles to a first-quarter concussion.
Jason Campbell threw three touchdown passes as host Cleveland beat Baltimore 24-18, snapping what had been the NFL's longest active losing streak by one team against another at 11 games. The Browns had not beaten the Ravens since November 18, 2007.
Chris Johnson ran for two touchdowns to lead Tennessee over host St. Louis 28-21.
Denver, Arizona, San Francisco, Detroit, Jacksonville and the New York Giants were idle this week. Chicago will visit Green Bay on Monday night.