The origins of the NFL's QB communication system
5:58
The quarterback hit that forced the NFL to consider safety | Weird Rules
7:18
The Art of Playcalling: "Ric Flair, Lebron" | NFL Films Presents
12:36
The REAL REASON the NFL Banned these AWESOME Customized Face Masks
3:38
Why Do Football Coaches Wear Headsets? EXPLAINED
10:01
The history of every NFL team | Chart Party
5:04
Translating Quarterback Play-Calling Language!
2:05
Demo: Football communication devices for coaches to speak to players
7:49