Green also became the second black head coach at a major college football program , when Northwestern hired him in 1981 .
Green became just the second black head coach in the NFL 's modern era when the Vikings hired him in 1992 , following Art Shell .
Green also became the second black head coach at a major college football program , when Northwestern hired Green in 1981 .
Green became just the second black head coach in the NFL 's modern era when the Vikings hired him in 1992 , following Art Shell .