FOXBOROUGH, Mass. - The New England Patriots' high-powered offense was completely stifled.

Tom Brady was harassed in the pocket. His pass catchers struggled to create separation down the field. And the Patriots struggled to get much going on the ground against a Baltimore Ravens front seven that controlled the line of scrimmage.

New England did finish with 420 yards from scrimmage, but the NFL's highest scoring offense during the regular season was limited to just 13 points, all of which came during a first half that ended with the Patriots leading 13-7.

New England's six second half possessions consisted of three turnovers, two punts and a turnover on downs.

"We played pretty good defense in the first half, too," Ravens cornerback Cary Williams said. "We knew we had to play at an elite level in order to win this game. Everybody just stuck together and stayed positive and continued to play the way we normally do. Eventually Tom Brady made a couple of mistakes and we were able to capitalize on them."

Brady finished with 320 yards, but he completed just 29 of his 54 pass attempts and was intercepted twice during the second half.

"The feeling was we knew we were coming out to play," Baltimore safety Bernard Pollard said. "This week, we were playing against a very good team. Just their offense, we know what they're capable of doing. I just think it was time for us to step up. And in the second half, we didn't flinch. I think we came out swinging and we did a really good job."

Pollard's jarring hit on Patriots running back Stevan Ridley early in the fourth quarter forced a crucial fumble that was recovered by Ravens defensive end Arthur Jones at New England's 47-yard line.

Baltimore quarterback Joe Flacco threw an 11-yard touchdown to Anquan Boldin just four plays later, a scoring pass that pushed the Ravens' lead to 28-13.

"We knew it was going to be tough," Ravens safety Ed Reed said. "Tom Brady's a great quarterback, and you really have to disguise things and pretty much be perfect. He puts the ball on his receivers, in their chests. We knew we were going to have to have perfect coverage, and we knew it was going to be a 60-minute game with no quit."

Nine of the Patriots' 12 possessions Sunday stretched into Baltimore territory, but the team came away with just 13 points.

"That's the game," New England wide receiver Deion Branch said. "Not only in the second half ... but you've got to score touchdowns against that team. They're a tough team with a tough defense. They play good ball, but you just have to score points."