Ex-NFL head coach Denny Green died Friday morning at the age of 67, his friend confirmed to ESPN's Adam Schefter.
Green reportedly died from cardiac arrest.
Green coached in the NFL from 1992 to 2006 ... famously leading the Minnesota Vikings to a 15-1 record in 1998.
He later went on to coach the Arizona Cardinals -- and, after losing a game to the Bears, gave one of the most famous post-game comments in Monday Night Football History.
"The Bears are who we THOUGHT they were! That's why we took the damn field!