The NFL's coaching ranks not only has issues of diversity but also nepotism. Out of a total of 792 coaches employed by NFL teams, 111 are related biologically or through marriage to current or former coaches, which constitutes a 14 percent rate.

Nine of the 32 current head coaches are either the son or father of a current or former NFL coach. 

Both Bill Belichick sons went straight from college to jobs on their dad’s staff, Steve as a coaching assistant and Brian as a scouting assistant. They did not coach high school or college football, and they are both now NFL position coaches. 

“Just read their bio, that’s all you need,” said one person close to the Patriots. “Remove the name and tell me what you have. Seriously.”