Rob Ryan explains his famous '46 Bear Defense' | The Film Room

Best 46 Defense Clinic I Have Ever Seen Part 1

1985 Bears: The Greatest Defensive Season of All-Time! | Legendary Teams

Football Defenses Explained (4-3, 3-4, 4-2-5 & More)

Rob Ryan explains NFL Defensive Fronts | The Film Room

Mike Singletary On Buddy Ryan Leaving The '85 Bears

The cover 1 defense explained by Rob Ryan | The Film Room

Dan Marino TORCHES The Greatest Defense! (Bears vs. Dolphins 1985, Week 13)

How Bill Belichick innovated his defense (again).

Mike Ditka vs. Buddy Ryan: The Beginning of the Rivalry | NFL Films | The Timeline: The Fog Bowl

MIKE SINGLETARY'S Unforgettable NFL Draft Experience with Buddy Ryan | Undeniable with Joe Buck

Buddy Ryan's 46 Defense (1985 Bears) | NFL Films Encore | NFL

How to Play Zone Defense & When to Use Cover 2, Cover 3, or Cover 4 | NFL Film Sessions

Meet The GREATEST Defensive Player of All Time

4 Pass Rushing techniques NFL teams use | Rob Ryan's Film Room

How Tom Landry's Flex Defense Countered Vince Lombardi's Run To Daylight Concept! War Stories!

#2: The '85 Chicago Bears | Top Ten Defenses of All Time | NFL Films

Different Fronts in The 3-4

SPORTS 101 // Guide to American Football Positions

Chicago Bears vs Green Bay Packers 1985 Week 9

Rob Ryan explains 'Bootleg' passing concepts | The Film Room