Whisenhunt served as the team’s offensive coordinator in 2013, the last time they made the playoffs, before becoming the head coach of the Titans in 2014. He was fired by the Titans after Week 7 this season.
The team fired previous offensive coordinator Frank Reich a couple days following the end of this past season.
Under Whisenhunt, the Chargers finished fifth in passing yards, 12th in scoring and the starting running back at that time, Ryan Mathews, rushed for 1,255 yards.
Last season, the Chargers were second-to-last in the NFL in rushing yards and had the fewest rushing touchdowns with four.
Before joining the Chargers in 2013, Whisenhunt spent the bulk of his career as the offensive coordinator for the Steelers and took the Cardinals to their first Super Bowl as a franchise in 2008.