Harbaugh inherited a talented but underachieving Chargers squad that has failed to maximize its potential. A mass exodus of blue-chip playmakers this offseason, including Keenan Allen, Mike Williams and Austin Ekeler, has led to questions about this team’s ability to go toe-to-toe with the NFL’s heavyweights, particularly the Chiefs, who have won the AFC West eight straight times. But Harbaugh clearly has a blueprint for constructing championship-caliber teams, based on the remarkable turnarounds he pulled off at each of his previous coaching stops (University of San Diego, Stanford, San Francisco 49ers, Michigan). He’s a rebuilding specialist who knows how to whip teams into shape utilizing an old-school approach that emphasizes physicality, toughness and discipline. Kansas City looms large within the division. That said, Harbaugh’s throwback approach could bully opponents, with the Chargers’ running game, defense and superstar signal-caller leading the way. (Although the sooner QB Justin Herbert shakes the plantar fascia injury that has slowed him in camp, the better.)