Officials have mechanics for everything, including for one of the most chaotic moments on the field.
How will NFL officiating look in 2021?
Over the years, the umpire has been one of the most fleet of foot officials. Now, the umpire stays stationary for much longer.
The NFL will do everything it can to make sure seven officials take the field for the push to the playoffs.
Players are now assisting officials in spotting the ball during a two minute drill.
NFL and NCAA officials are have to change their whistle mechanics in order to officiate in 2020.
The NFL continues to consider adding another official to the crew. It just won't be this year.
Next in our NFL100 series, a look back at 100 years of coin tosses.
NFL officials used to play with only one football.
As a part of the NFL's 100th season, Football Zebras takes a look at officiating mechanics over the last century.