Chiefs maintain unbeaten run
Kansas City Chiefs extended the NFL's only unbeaten record for another week thanks to a 23-13 road win against Buffalo Bills.
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The Chiefs moved to 9-0 for the season but had to come from behind at Ralph Wilson Stadium with their defence playing a starring role.
Buffalo opened the scoring in the first quarter when third-string quarterback Jeff Tuel - starting due to injuries to EJ Manuel and Thad Lewis - found former Olympic long jump finalist Marquise Goodwin with a 59-yard touchdown pass.
An exchange of field goals between Ryan Succop and Dan Carpenter allowed the Bills to go in 10-3 up at half-time and Buffalo were pressing to extend their advantage with third-and-one at the Kansas City one-yard line on their first possession of the second half.
But Tuel was intercepted by cornerback Sean Smith, who took it the full length of the field for a Chiefs touchdown before a further field goal exchange made it 13-13 entering the final quarter.
Linebacker Tamba Hali returned TJ Graham's fumble 11 yards for another Kansas City touchdown and Succop's third field goal sealed the result.
Kansas City (9-0) have now matched the best start in franchise history set in 2003 and enter their bye week before a key AFC West showdown against Peyton Manning and the Denver Broncos (7-1) on Nov. 17.
The Chiefs held an opponent to 17 points or fewer for the ninth straight time - matching the NFL record set by the Atlanta Falcons in 1977.
And they extended their impressive worst-to-first turnaround under first-year coach Andy Reid, who has transformed a franchise that finished with a league-worst 2-14 record last season.
The Bills (3-6) were unable to overcome their own errors despite dominating nearly every offensive category. Buffalo had the edge in yards and first downs (25-15), and its 77 plays were 23 more than Kansas City ran.
The difference proved to be the Bills' inability to compensate for being down to their fourth-string quarterback. Tuel started in place of interim starter Thad Lewis, sidelined with bruised ribs.