He is the fourth Ravens defensive coordinator to get a head-coaching job in less than a decade, following Bengals coach Marvin Lewis, Jets coach Rex Ryan and former 49ers coach Mike Nolan.
In other NFL news:
* NFL commissioner Roger Goodell was given a contract extension through the 2018 season. No terms were disclosed. Goodell, 52, took over for Paul Tagliabue in 2006. His original 5-year contract was extended in 2009. He earned about $10 million, including bonuses, under that contract.
* Fans are wondering about the fate of football in St. Louis as a deadline approaches for a plan to upgrade the home of the Rams. Next Wednesday, Feb. 1, is the deadline for the St. Louis Convention and Visitors Commission to outline how it will transform the Edward Jones Dome into a "first-tier" stadium by 2015. If it fails to do so, the Rams can break their lease - and potentially move - after the 2014 season.
* Minnesota Vikings owner Zygi Wilf said that the team wants a new stadium in the Twin Cities, even if it means building on the current site of the Metrodome.
"I'm optimistic that it could be," Wilf said when asked if the Metrodome's downtown Minneapolis location - which had been his least favorite option - could be the site of a new stadium that he wants to be partially funded by state money.
Wilf and team officials met privately with Gov. Mark Dayton and other politicians to discuss tearing down the Metrodome and rebuilding there. The meeting came after several days in which the team's bid for public funding appeared on the brink of falling apart as Dayton proclaimed two other site options unworkable and Wilf was said to be frustrated that a proposal to build in suburban Arden Hills had been discarded.
* The NFL is relaxing its social media policy and allowing players to tweet before and during Sunday's Pro Bowl. The NFL said it will set up a computer on each sideline where players can use Twitter. Mobile devices will not be allowed during the game. The players can also tweet from their phones before the game and at halftime.
The existing policy bans players from tweeting 90 minutes before games all the way until they fulfill their postgame media obligations.
* Oakland still is finalizing a contract to make Denver defensive coordinator Dennis Allen the Raiders' head coach, a source said.
* Former Green Bay coach Mike Sherman had a second interview with Tampa Bay, ESPN.com reported.
* Nose tackle Chris Hoke retired at 35 after 11 seasons with Pittsburgh.