Caldwell's chances increase for Lions' job

The Baltimore Ravens may have to find a new offensive coordinator soon.

Jim Caldwell, who just finished his first full season as the Ravens' play caller, is looking like the leading candidate for the Detroit Lions' head coaching job after presumed front-runner Ken Whisenhunt accepted an offer to become the Tennessee Titans' next head coach.

League sources told ESPN's Adam Schefter and Chris Mortensen that Lions have kept open communications with Caldwell and his representatives. Working on Caldwell's favor is the support from former Colts head coach Tony Dungy, who spoke with Lions vice chairman Bill Ford Jr. earlier Monday to reaffirm strong attributes he believed Caldwell would bring to the Lions.

There was no guarantee that Caldwell would remain the Ravens' offensive coordinator if he didn't get hired as a head coach this offseason. The Ravens finished 29th in offense last season.

If Caldwell is hired, he could take some coaches from the Ravens' staff with him. Secondary coach Teryl Austin has been mentioned as a possibility to become Caldwell's defensive coordinator.