The NFL: 100 Years of football - Los Angeles Times
NFL100: A century of determining who gets the ball first – Football Zebras
2020 AFC Wild Card liveblog: Ravens at Titans – Football Zebras
A backward pass can be ruled forward, but wasn't for Packers – Football Zebras
Jordy Nelson scored on a catch that was not a catch – Football Zebras
Making the impossible call – Football Zebras
NFL100: 30 years ago instant replay helped decide the outcome of a game … and it wasn't pretty – Football Zebras
No momentum for big instant replay rule changes – Football Zebras
NFL100: In 1979, the NFL renumbered its officials. After 3 years, they scrapped the failed plan – Football Zebras