John Fox’s job might be on the line. (Harry How / Getty Images)

There might be a late, dark-horse candidate for one of the NFL coaching vacancies, depending on how the AFC division game between the Denver Broncos and Indianapolis Colts goes.

Broncos Coach John Fox might be available if the Broncos lose to the Colts, Fox Sports’ Jay Glazer reports. It seems incomprehensible that Fox would be out of a job after three consecutive seasons of at least 12 victories, but Denver has advanced to the Super Bowl only once — and lost to Seattle. A division-round exit, like the one the Broncos made two years ago in Peyton Manning’s first season, could prompt John Elway to make a change. Manning, who has said he intends to play next season, will turn 39 in March and perhaps Elway realizes time is of the essence. Fox has lost twice as a head coach in the Super Bowl.

If those dominoes fall, Fox would, of course, immediately rise “to the top of lists” as teams look for their next head coach, Glazer says.