Sid Gillman coaching tree

There are 20 Super Bowl winners on Gillman's coaching tree.

Chuck Noll (4) and Dick Vermeil (1) are direct descendants.

Al Davis was a direct descendant who tutored John Madden (1) Tom Flores (2) and Bill Walsh (3)

Off of Walsh's tree you have Holmgren (1) and George Seifert (2)

Jon Gruden(1) is connected to Walsh through Paul Hackett.

Mike Shanahan (2) is connected through Seifert.

Denny Green also comes off Walsh's tree and Billick (1) and Tomlin (1) comes off of his.

Back at the top Tony Dungy (1) is directly connected to Chuck Noll.

Jim Caldwell comes off of Dungy's tree so that could make 21 Super Bowl winners off the old Buckeyes coaching tree.

He is rarely heard of and has made such a dramatic impact on the game.