Ravens facing Pats test

Flacco: Spreading his wings

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Baltimore @ New England
Dallas @ Denvers
Live on Sky Sports 2 from 5.30pm Sunday

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Unbeaten Baltimore test their Super Bowl credentials with a tough road trip to New England, live on Sky Sports 2 on Sunday, while Denver also defend a 100 percent record against Dallas.

The Ravens are bossing the AFC North so far but they now travel to face Tom Brady and his Patriots at the Gillette Stadium.

The last time the pair met in 2007 the Pats were defending an unbeaten record, and they scraped a narrow win in Baltimore as they went 16-0 before going on to lose the Super Bowl.

Brady is still finding his feet after missing most of last season, and the fearsome Ravens defence is sure to put him and his injured knee to the test as Baltimore look to press their claims of going all the way this season.

Famed for their defensive prowess, John Harbaugh's team have this year found their offensive thread as they are the top points scorers in the AFC as second-year quarterback Joe Flacco finds his feet and his arm.

Record

That newly found offensive instinct will be put to the test as the Ravens have only scored six points in two visits to New England, but that will surely be improved upon on Sunday.

The Denver Broncos are a more surprising 3-0 team after their pre-season troubles, but they will also face a big test when the Cowboys roll into town in the second live game on Sky Sports 2

In a classic encounter, Denver's first-ranked defence goes up against Tony Romo and a Dallas offence ranked third in the NFL so far this season.

Look out for Broncos running back Knowshon Moreno, who leads all rookies in the league with 184 yards rushing, and he will look to help the hosts extend their run of three wins on the spin against Dallas.

Elsewhere, LaDainian Tomlinson should return to action for San Diego's game against Pittsburgh on Sunday, but the Steelers look set to be without their top rusher Willie Parker.

Boller starts

Quarterback Kyle Boller will make his first start for the St Louis Rams against San Francisco, who will have Glen Coffee standing in for star running back Frank Gore.

Brett Favre faces his former team-mates from Green Bay as the Packers visit's the Minnesota Vikings, while there should be points aplenty as the high-flying Jets visit New Orleans and their all-out offence.

Clinton Portis will be a game-time decision for the struggling Washington Redskins due to his bruised calf, while £100m man Albert Haynesworth could play against Tampa Bay after returning to practice midweek.

Matt Hasselbeck is 'very doubtful' to play for Seattle against the Indianapolis Colts due to his rib injury, with Seneca Wallace standing by to start under centre again.

Marshawn Lynch returns for Buffalo after suspension, while their opponents Miami will have Chad henne starting at QB after Chad Pennington was ruled out for the season with a shoulder injury picked up last week.