
Decoding the secret language of football
The architecture of X's and O's
From headset to huddle
The chess match before the snap
YOUR GOAL
Master of Inside the NFL playbook
dave From Headset to Huddle
Play-call in my ear, green dot on the helmet, silent at fifteen!

dave The huddle is a highly structured, brief meeting where the quarterback establishes authority and delivers the play.

dave Go inside the NFL playbook to see how a single football play is designed, communicated from headset to huddle, and adjusted at the line of scrimmage.
Radio cutoff: The NFL radio feed in the quarterback's helmet cuts off automatically with 15 seconds left on the play clock.
A device consisting of headphones, often with a microphone, worn on the head for listening and speaking. In 1994, the NFL first permitted coaches to transmit play calls from these devices to quarterbacks.
How many players on the defensive side of the ball are allowed to wear a radio helmet at one time?
How do players typically arrange themselves in an NFL huddle to block out crowd noise?
What symbol is placed on an NFL helmet to indicate it contains a wireless radio receiver?

