The move had been speculated since San Diego fired offensive coordinator Frank Reich earlier this month.
First on the Whiz's to-do list is jumpstarting a marred running game, specifically disappointing rookie Melvin Gordon. In his one season as coordinator, the Chargers ran the ball well with Ryan Mathews toting the rock 285 times for 1,255 yards. If the Chargers could coax anything close to that production out of their current stable of backs, Rivers' quick-pass attack and play-action will be much more viable.
Bringing back Whisenhunt made too much sense to pass up.