What happened: NFL legend Mike Ditka has passed away at the age of 86, his family announced. He was a towering figure in the city of Chicago, having revolutionized the tight end position during his playing days.

Why it matters: Ditka cemented his legacy by serving as the head coach of the world champion 1985 Bears. His passing follows the recent death of former Bears fullback Matt Suhey, another member of that championship era.

What to watch: Tributes from around the football world are expected as the league honors his monumental impact.