Chargers hire Western Michigan's Chris O'Leary as DC

(Photo credit: Kirby Lee-Imagn Images)

Jim Harbaugh is replacing his understudy with ... his understudy's understudy.

The Los Angeles Chargers announced late Wednesday night that they hired Western Michigan defensive coordinator Chris O'Leary to fill same role with the Chargers.

O'Leary will replace Jesse Minter, who left Los Angeles to become the Baltimore Ravens' head coach last week after spending