In a game dubbed "The Battle of the Bills," the Bill Belichick-led New England Patriots came out on top, blanking Bill Parcells's Dallas Cowboys 12-0 in a tight encounter on Sunday.
It was a rare shutout loss for a club coached by Parcells, who has suffered just two scoreless efforts in his 249 regular-season games.
The two coaches, who worked together for 15 seasons, winning two Super Bowls, shared a hug at mid-field after the contest.
The Pats (8-2), wearing their new silver sweaters, did the bulk of their scoring in the opening half.
They got an early 23-yard field goal from Adam Vinatieri, the hero of Super Bowl XXXVI.
Antowain Smith then scampered two yards for the game's only touchdown 2:34 from the break.
Vinatieri's subsequent convert try was blocked.
He made amends with another field goal 1:56 from the end.
Smith racked up a team-high 51 yards on the night, with Troy Hambrick topping Dallas (7-3) with 41.
It was a forgettable night for Cowboys quarterback Quincy Carter, who was intercepted three times and also fumbled once.
The Pats' Tom Brady played error-free football, throwing for 212 yards.
Parcells previously coached in New England and also steered both New York clubs, beating the pair of them earlier in the season.
However, the two-time Coach of the Year was unable to pull off the sweep of his former teams.
"Both coaches are great for the game," Patriots owner Bob Kraft said.
Chiefs 19, Bengals 24
Peter Warrick scored on a 68-yard punt return and a 77-yard touchdown catch to lead the Cincinnati Bengals to a 24-19 victory Sunday that gave the Kansas City Chiefs their first loss of the season.
Trying to become the first team since 1998 to start 10-0, the Chiefs instead lost to the up-and-coming Bengals (5-5), who backed up their boast and finished the day tied for first.
"It would have been much worse if they had beaten us at our best," Chiefs returner Dante Hall said. "But we didn't play well. It's like they say: `On any given Sunday.'"
Trent Green threw two touchdown passes in the final seven minutes, the last a 3-yarder to Jason Dunn with 3:19 to go. The Chiefs never got the ball back.
Panthers 20, Redskins 17
In Charlotte, North Carolina, Stephen Davis scored on a 3-yard run with 1:09 remaining to help the Carolina Panthers beat his old team.
Trying to shake off a nagging ankle sprain that sidelined him last week, Davis had 92 yards rushing on 28 carries for the Panthers (8-2), compared to the 54 yards rushing the Redskins managed.
Eagles 28, Giants 10
In Philadelphia, Donovan McNabb threw for 314 yards and two touchdowns, and Brian Westbrook caught two TD passes and ran for a score in the Eagles' fifth straight victory.
The two-time NFC East champion Eagles (7-3) have won seven of eight after opening the season with two losses at home. The Giants (4-6) have lost two in a row, including an embarrassing 27-7 loss to the Atlanta Falcons last week.
Rams 23, Bears 21
In Chicago, Jeff Wilkins kicked a 31-yard field goal with 38 seconds left to help the Rams win for the sixth time in seven games.
Marshall Faulk ran for 103 yards and the Rams (7-3) overcame a 14-3 halftime deficit. Wilkins' third field goal came after the Rams moved 67 yards behind six completions from Marc Bulger, including a 21-yarder to Torry Holt.
Browns 44, Cardinals 6
In Cleveland, Kelly Holcomb passed for 392 yards and three touchdowns and the Browns showed no signs of disarray in their rout of the Cardinals.