Updated: 9:30 p.m.
ORCHARD PARK, N.Y. -- The Kansas City Chiefs can thank their opportunistic defense for keeping their perfect start intact.
Sean Smith returned an interception 100 yards for a touchdown and Tamba Hali scored on an 11-yard fumble return in a 23-13 win over the Buffalo Bills on Sunday. The defense made up for a sputtering offense that managed just 210 yards, and for its own deficiencies.
The Chiefs gave up a season-worst 470 yards to a Bills offense that was led by undrafted rookie Jeff Tuel, making his first career start.
Kansas City (9-0) remained the NFL's only undefeated team and matched the best start in franchise history set in 2003. The Chiefs now enter their bye week before a key AFC West showdown against Peyton Manning and the Denver Broncos (7-1) on Nov. 17 (see full recap).
Brady throws 4 TDs, Pats rip Steelers
FOXBOROUGH, Mass. -- Now that looked like the real Tom Brady.
The two-time NFL MVP had his best game of an inconsistent season and the New England Patriots used one of the best offensive performances in their history to beat the Pittsburgh Steelers 55-31 on Sunday.
Brady threw for season highs of 432 yards and four touchdowns and Rob Gronkowski had a career-high nine receptions.
The 55 points were the most scored in an NFL game this season and the most ever scored against the Steelers (2-6).
Brady had 252 yards passing in the first half, more than he had in five of his other eight games for New England (7-2) (see full recap).
Seahawks overcome 21-point deficit to top Bucs
SEATTLE -- Russell Wilson and Marshawn Lynch made the plays to help the Seattle Seahawks pull off the greatest comeback in franchise history against the winless Tampa Bay Buccaneers.
It was just another ugly win during the best start in Seattle's history.
Steven Hauschka kicked a 27-yard field goal with 8:11 left in overtime, and the Seahawks overcame a 21-point deficit to beat the Tampa Bay Buccaneers 27-24 on Sunday.
Trailing 21-0, Seattle improved to 8-1, but it was far from easy against the winless Buccaneers (see full recap).
Folk, defense lead Jets to upset of Saints
EAST RUTHERFORD, N.J. -- Rex Ryan got the better of his twin again, thanks to big plays by his pride and joy, the New York Jets' defense.
The offense and special teams came up with some huge plays, too.
Nick Folk remained perfect this season by kicking four field goals, Ryan's defense held Drew Brees and the high-scoring Saints to six points in the second half, and New York had seven plays of at least 19 yards in a 26-20 upset of New Orleans on Sunday.
Ryan is now 7-3 against his brother, Rob, and the Jets (5-4) maintained their string of winning in odd-numbered games. Folk is 23 for 23 on field goals and 14 of 14 on extra points (see full recap).
Panthers crush Falcons, win fourth straight
CHARLOTTE, N.C. -- Cam Newton and the Carolina Panthers are on a roll.
Newton threw for one touchdown and ran for another to overcome a shaky start, the defense intercepted Matt Ryan three times and Carolina beat the Atlanta Falcons 34-10 for its fourth straight victory.
Newton entered on quite a streak, completing 77 percent of his passes with eight touchdowns - six passing and two rushing - and no turnovers in his previous three games.
He had two first half interceptions and wasn't sharp on his deep balls, regularly overthrowing his receivers. Yet he bounced back to throw for 249 yards, including a 14-yard touchdown pass to tight end Greg Olsen. He also ran for an 8-yard touchdown (see full recap).
Johnson's big day propels Titans over Rams
ST. LOUIS -- Jeff Fisher has seen plenty of excellent games from running back Chris Johnson.
The view from the opposite sideline was less enjoyable.
Johnson ran for 150 yards and two touchdowns and the Tennessee Titans got the best of Fisher, who coached them for 16 seasons, and the St. Louis Rams 28-21 on Sunday.
Johnson's 19-yard scoring run snapped a tie with 2:54 to go and came the snap after Jurrell Casey sacked and stripped quarterback Kellen Clemens, and Derrick Morgan recovered.
The Rams (3-6) got a second straight 100-yard game from rookie Zac Stacy, who had 127 yards on 27 carries and two touchdowns (see full recap).