What is “the box” when referring to defenses in American football

No, defenses have not figured out Patrick Mahomes and the Chiefs offenses

Gus Bradley Glossary: The Responsibilities of the Strong Safety - Sports Illustrated Indianapolis Colts News, Analysis and More

Identifying Defensive Alignments in Football - CoachUp Nation

How the Browns built one of the NFL's best defenses - ESPN

USC vs Hawaii Offensive Play Calling

Utilizing a HEAVY technique in the run game

NFL: How NFL defenses fell so far behind modern offenses

Playing gap and a half' in Vic Fangio and Brandon Staley's system - The Athletic

Are Defensive Play-Callers Consistent Enough To Be Exploitable?

PFF50: The 50 best players in the NFL right now, NFL News, Rankings and Statistics

It's time for the NFL to get funky with RPOs

What does it mean to be balanced on offense? - Football Study Hall

Pro Football Journal: After Leonard Fournette Gashed Rams Defense How Did Wade Phillips Counter?

Can New Blood Revitalize Brandon Staley's Defense in Los Angeles? - The Ringer

NFL Health and Safety Related Rules Changes Since 2002