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Knees Bent. Pads Down. Head Up.
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Countdown to kickoff: how NFL games happen.
In the NFL, balancing technology with tradition.
How television has changed the game.
Upon further review…
It takes hundreds of computers and five NFL executives to create the NFL’s 256-game masterpiece.
The inaugural analytics contest explores statistical innovations in football — how the game is played and coached.
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Learn how NFL players have changed over time, how they’re developed and drafted and how the league works with them after their playing days are over.
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A look at the programs and services NFL Player Engagement provides to assist every player before, during and after his football career.
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“One thing hasn’t changed: the pressure. It will always be there.”
The latest information from the NFL's officiating command center.
Every week, officials take the field ready to put months of preparation, training and hard work on display, knowing that the whole world — and the Officiating Department — is watching.
Officiating an NFL game takes years of training and experience.
NFL Football Operations protects the integrity of the game by ensuring that the rules and the officiating are consistent and fair to all competitors.
The custodians of football not only have protected its integrity, but have also revised its playing rules to protect the players, and to make the games fairer and more entertaining.
The NFL Video Rulebook explains NFL rules with video examples.
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The NFL's procedures for breaking ties for postseason playoffs.
The NFL's familiar hand signals help fans better understand the game.
A quick reference guide to the NFL rulebook.
Sharpen your NFL football knowledge with this glossary of the game's fundamental terms.
See where the players line up in pro football's most common offensive and defensive formations.
Understand what the graphics on NFL television broadcasts mean and how they can help you get the most out of watching NFL games.
The NFL’s instant replay review process focuses on expediting instant replay reviews and ensuring consistency. Learn how it works.
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The NFL and the NFL Players Association have released the results of an annual laboratory study on helmet safety.
Based on the results of this study, the NFL and NFLPA will prohibit 10 helmet models starting in the 2018 season. Six models are prohibited immediately. The other four may be worn by players who used them in 2017 but may not be adopted by new players. Previously, NFL players could choose any helmet that passed current National Operating Committee on Standards for Athletic Equipment certification standards.
The prohibited helmets performed poorly in laboratory testing, have been discontinued by the manufacturer or were produced by companies that no longer manufacture football helmets.
The results of the laboratory tests will be displayed on posters and shared with NFL players, equipment managers, and medical, training and coaching staffs to help inform equipment choices. Players should also consider factors including fit, comfort, durability, player position and the player's medical history when choosing a helmet.
The goal of the study was to determine which helmets best reduced head impact under laboratory conditions. The tests simulated concussion-causing impacts sustained by NFL players during games. The testing involved 34 helmet models, which make up 98 percent of all helmets currently in use.
The tests were conducted by an independent helmet testing laboratory, Biokinetics Inc. of Ottawa, Canada. The study formulation, experimental design and data analysis was performed by biomechanical engineering consultants appointed by the NFL and NFLPA. An independent biostatistician, Dr. Timothy McMurry, Assistant Professor of Biomechanics at the University of Virginia’s Department of Public Health Sciences, assisted in the analysis. The results were then presented to NFL Chief Medical Officer, Dr. Allen Sills, and NFLPA Medical Director, Dr. Thom Mayer.
Note: the results of this study should not be extrapolated to collegiate, high school or youth football.