Source: Lardarius Webb tears ACL

Baltimore Ravens cornerback Lardarius Webb suffered a torn ACL in his right knee Sunday against the Dallas Cowboys, a league source told ESPN NFL Insider Adam Schefter.

An MRI exam Monday confirmed the torn ACL, multiple media reports said, adding that Webb is done for the year.

Webb banged his knee in a first-quarter collision with Cowboys wide receiver Dez Bryant. Webb remained prone on the field for several minutes before being helped to the sideline.

The team originally labeled the injury a sprain, but after Baltimore's 31-29 victory, coach John Harbaugh painted a potentially darker picture.

"Lardarius Webb does not look good right now," Harbaugh said. "It's a potential ACL. We've got a problem there. We don't know for sure, but that's what it looks like right now."

Added Ravens safety Bernard Pollard: "That's what happens in this game. You hate to see a guy like that go down because he's worked his tail off. Our prayers are with him to get a speedy recovery, but the next man has to step up."

Now in his fourth season, Webb has one interception, one forced fumble and a fumble recovery in six games this year.

Those weren't the only injuries for the Ravens.

They lost middle linebacker Ray Lewis to a triceps injury. Lewis will have an MRI on Monday, a team source confirmed to ESPN's Ed Werder.

And defensive tackle Haloti Ngata tore his MCL but is still likely to play Sunday against Houston, a league source told Schefter.

Information from ESPN NFL Insider Adam Schefter, ESPN's Ed Werder and The Associated Press was used in this report.