If you’re looking for NFC powerhouses, try the Cowboys and Eagles.

Dallas and Philadelphia each improved to 5-1 on Sunday with impressive performances. The Cowboys went into Seattle and edged the defending Super Bowl champion Seahawks 30-23. A few hours later, Philadelphia routed the New York Giants 27-0.

DeMarco Murray again rushed for more than 100 yards and scored on a 15-yard run with 3:16 left as the Cowboys stunned Seattle 30-23.

Dallas, 5-1 for the first time since 2007, overcame a pair of special teams turnovers to become the first team outside the NFC West to win in Seattle since 2011.

“I think that showed the maturity of this team. We expected to win,” Dallas tight end Jason Witten said. “We knew this was going to be a challenge and we stayed the course.”

The course couldn’t have been rougher for the Giants at Philadelphia. Connor Barwin had three of the Eagles’ eight sacks.

Cowboys 30, Seahawks 23

Murray’s touchdown run capped a 75-yard drive that saw Tony Romo convert a third-and-20 with a pass to Terrance Williams along the sideline.

Murray had 115 yards on 29 carries to join Jim Brown as the only running backs in NFL history to open a season with six straight 100-yard games. Murray also had six receptions for 31 yards.

Eagles 27, Giants 0

Wearing all-black uniforms for the first time in franchise history, the Eagles shut out an opponent for the first time since a 24-0 win over the Giants on Dec. 1, 1996, at old Veterans Stadium.

Nick Foles threw two touchdown passes and LeSean McCoy had a season-high 149 yards rushing.

Ravens 48, Bucs 17

At Tampa, Joe Flacco threw for four touchdowns in the first quarter and five altogether — all in the first half. Baltimore (4-2) scored on six straight possessions to begin the game, with Flacco throwing touchdown passes on the first five. Torrey Smith caught the first two, and Kamar Aiken, Michael Campanaro and Steve Smith had the others as the Ravens rebounded from a road loss to Indianapolis.

Broncos 31, Jets 17

During a much more successful trip to the Meadowlands than in February, the Broncos (4-1) did their best work running the ball and stopping the Jets’ ground game.

Yes, Peyton Manning connected with Julius Thomas twice and Demaryius Thomas once, leaving the Denver quarterback two shy of Brett Favre’s record for career touchdown passes. But Ronnie Hillman ran for 100 yards and Denver allowed only 31 yards rushing.

Manning has 506 touchdown passes, and could tie or break Favre’s record next Sunday at home against San Francisco.

Patriots 37, Bills 22

Even with new owners, the Bills can’t handle the Patriots.

Tom Brady threw four touchdown passes and had his 60th 300-yard game to improve to 23-2 against the Bills (3-3). Brandon LaFell had two touchdown catches, including a 56-yarder, and the Patriots (4-2) forced three turnovers.

Cardinals 30, Redskins 20

Carson Palmer returned from a five-week absence to throw two touchdown passes, and host Arizona took the NFC West lead.

Larry Fitzgerald caught six passes for a season-high 98 yards and his first touchdown of the season to help the Cardinals (4-1) bounce back from a 41-20 drubbing at Denver.

Kirk Cousins was 24 for 38 for 354 yards, including a 64-yard touchdown pass to DeSean Jackson for the Redskins (1-5), but threw three fourth-quarter interceptions. Washington has lost four straight and 13 of 14.

Panthers 37, Bengals 37, OT

No one came away satisfied in Cincinnati. Especially Mike Nugent.

The Bengals kicker missed a 36-yard field goal attempt on the final play of overtime. It was the Bengals’ second tie at home in six years: They finished 13-13 with Philadelphia in their last overtime game at Paul Brown Stadium in 2008.

Nugent made a 42-yard field goal that put Cincinnati (3-1-1) up after the opening drive of overtime. Carolina (3-2-1) tied it on Graham Gano’s 36-yarder with 2:19 left.

Chargers 31, Raiders 28

At Oakland, rookie Branden Oliver scored on a 1-yard run with 1:56 to play to spoil interim coach Tony Sparano’s Raiders debut. Oliver rushed for 101 yards.

Philip Rivers threw three touchdown passes to give San Diego (5-1) its fifth straight win and send Oakland (0-5) to its 11th straight loss.

Packers 27, Dolphins 24

The visiting Packers (4-2) staged a late rally in the South Florida heat. Aaron Rodgers threw a 4-yard touchdown pass to Andrew Quarless with 3 seconds left.

Green Bay trailed 24-17 before Rodgers directed a 68-yard drive for a field goal with 4:09 to go. Miami couldn’t move the ball, and Rodgers hit Jordy Nelson on fourth-and-10 for 18 yards to keep the winning drive alive.

Bears 27, Falcons 13

At Atlanta, Jay Cutler threw for 381 yards and a touchdown, while Matt Forte ran for two second-half scores. Chicago (3-3) has won three of four away from Soldier Field, though there were so many Bears fans at the Georgia Dome that it seemed almost like a neutral site.

Lions 17, Falcons 3

At Minneapolis, Tahir Whitehead intercepted two passes, and Joique Bell put the game away with a fourth-quarter touchdown run. Calvin Johnson and Reggie Bush were sidelined, so Detroit’s defense stepped up, getting eight sacks, 2 1/2 by Ziggy Ansah. The Lions (4-2) are tied with Green Bay atop the NFC North.

Titans 16, Jaguars 14

At Nashville, the Titans kept Jacksonville winless.

Sammie Hill blocked a field goal attempt in the final seconds and Ryan Succop kicked three field goals.