White coaches overwhelmingly fill the offensive positions associated with advancement to the head coaching ranks, according to a study of 2016 NFL coaching staffs.

The results compromise the Rooney Rule's efforts to reverse a recent trend.

Eighty of NFL's current 85 offensive coordinators, quarterback coaches and offensive quality control coaches are white, including all 37 with the word "quarterback" in their job descriptions.

Minorities comprise one-third of NFL coaches overall, but they dominate positions less associated with advancement.

Since 2012, NFL teams have hired 21 first-time white head coaches and one first-time minority head coach.

"The good thing about the Rooney Rule was not that you had to interview a minority candidate but that it slowed the process down and made you do some research," Tony Dungy said, "but now it seems like in the last few years, people haven't really done what the rule was designed for. It has become, 'Just let me talk to a couple minority coaches very quickly so I can go about the business of hiring the person I really want to hire anyway.'"