Former Houston Texans and Denver Broncos offensive coordinator Rick Dennison has spoken with Ravens coach John Harbaugh during the past few days, according to a source.
It's unclear if he was in Baltimore for a formal interview this weekend, but Dennison is regarded highly by Harbaugh, according to sources.
What could make Dennison an intriguing potential candidate for the Ravens' offensive coordinator job is his diverse coaching background.
Dennison is well-versed in zone-blocking schemes and has run successful rushing offenses led by Arian Foster.
Dennison could provide a boost to a running game that struggled last season as Ray Rice rushed for just 660 yards while the offensive line allowed 48 sacks and quarterback Joe Flacco threw a franchise-record 22 interceptions.
Dennison interviewed last year for the Chicago Bears' head coaching job that went to Marc Trestman.
Texans players have praised Dennison, a former math teacher with a graduate degree in civil engineering, for his motivational skills, intelligence and work ethic.
Dennison is a protege of legendary offensive line coach Alex Gibbs, who first developed the zone-blocking schemes that made the Broncos' rushing offenses so dangerous.
Dennison also played nine seasons in the NFL as a linebacker for the Broncos.
And he's coached the offensive line and special teams previously.
Although the Texans did a nosedive last season that cost Dennison and coach Gary Kubiak their jobs, Dennison has had success over 19 seasons in the league.
In 2012 with an offense run by Dennison, the Texans set a franchise record with 26 points per game and finished seventh in total offense with an average of 372.1 yards per game.
Seven Texans made the Pro Bowl that season, including wide receiver Andre Johnson and Foster.
In 2011, the Texans set a franchise record with 2,448 rushing yards.
He was the Texans' offensive coordinator from 2010 until last season.
Dennison was the Broncos' offensive coordinator from 2006 to 2008 after Kubiak went to Houston, where he joined him in 2010.
During Dennison's time as an offensive coordinator in Denver, the Broncos averaged 350.5 yards per game and rushed for 124.4 yards per game and averaged 4.6 yards per carry.
As a player, Dennison played in three Super Bowls for the Broncos and in 1989 he won the Ed Block Courage award.