Word of Muth: Box Safeties | Football Outsiders
Identifying Defensive Alignments in Football | CoachUp Nation
Anatomy of a Play: Colin Kaepernick's Game-saving 51-yard Pass to Michael Crabtree
Football Rules for the Tackle Box Dimensions - SportsRec
Mike Pereira: Calling the new helmet rule inside the tackle box will be almost impossible - ProFootballTalk
Helmet detection error analysis in football videos using Amazon SageMaker | AWS Machine Learning Blog
Passing pocket - Wikipedia
Fat Camp: Understanding the Manning offense - Part 2 - It's All Over, Fat Man!
What Is The Tackle Box In Football? - Metro League
Understated rule change could cost roster spots – Football Zebras
Martial Becomes All-Time NCAA FBS Tackles Leader; Troy Survives at Home Against Army for Seventh-Straight Win - Troy University Athletics
DottingTheEyes - Fulton Analysis: Playing with Fire
Referees of Reddit, I have a series of gifs and questions for you (Part 3 of 3: Miscellaneous fouls) : r/CFB
Clemson got called for intentional grounding on this reverse thanks to a little-known rule quirk - SBNation.com
Hockey: Basic skills | Tackle box 1v1 (Tactical: Defensive (Even Numbers), Under 14s)
Next Gen Stats: Compelling figures that could shape Week 12
What is the Tackle Box in Football? (Full Explanation)
Here's a guide to targeting in college football and the NFL - NBC Sports Chicago
Oregon freshman linebacker Justin Flowe out indefinitely NFL - Bally Sports
What is “the box” when referring to defenses in American football? - Quora
USA Football
Football Rules and Interpretations - AU Football Forum - AUFAMILY
RedditCFB on Twitter: "Here's an interesting new overlay ESPN showed off on an intentional grounding call. The darker green overlays show both a live-updating tackle box and the 3 yard area before
