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Sources
Every source cited on this site (53). League and rulebook pages first; trade press is labeled.
- 2024 NFL Rulebook (NFL Football Operations) - unchanged basics: field, timing, timeouts
- 2025 NFL rule, bylaw and resolution changes (TheRams.com)
- 2026 NFL Draft starts in Pittsburgh (WESA, public radio)
- 2026 NFL Rulebook: index, 2026 rule changes and penalty tables (NFL Football Operations)
- 2026 Playing Rules, Bylaw and Resolution Proposals (NFL Football Operations)
- ClickOnDetroit (WDIV): How a 1934 marketing gamble made the Lions' Thanksgiving tradition
- Dummies.com: The punt rules of a football game
- Dynamic Kickoff Rule Explainer (NFL Football Operations)
- Fan Code of Conduct (BuffaloBills.com)
- Featured Rules: 2025 rule changes (NFL Football Operations)
- Football Terms (NFL Football Operations)
- Formations 101 (NFL Football Operations)
- Guide to the Officials' Signals (NFL Football Operations)
- List of current NFL stadiums (Wikiwand mirror of Wikipedia)
- Looking at tweak to kickoff, other rules changes for 2025 season (NFL.com)
- Mental Floss: Explaining the magic yellow first-down line
- NFL announces 2026 salary cap set at $301.2 million per team (NFL.com)
- NFL announces dates for 2027 Draft in Washington, D.C. (NFL.com)
- NFL announces important dates for 2026-2027 (Seahawks.com, relaying the league calendar)
- NFL announces new playing rules, bylaws, resolutions for 2026 (NFL.com)
- NFL clear bag policy - Be Clear (NFL.com)
- NFL emergency third-quarterback rule: Questions and answers (NFL.com)
- NFL founded in Canton on Sept. 17, 1920 (Pro Football Hall of Fame)
- NFL Franchise Histories (Pro Football Hall of Fame)
- NFL overtime regular-season rules change 2025 (AtlantaFalcons.com)
- NFL Rules Digest (NFL Football Operations)
- NFL Tie-breaking Procedures (NFL Football Operations)
- NFL Video Rulebook: Play Clock (NFL Football Operations)
- NFL Video Rulebook: Scoring Plays (NFL Football Operations)
- NFL, NFLPA ratify new collective bargaining agreement (Giants.com, 2020)
- The NFL explains free agency (Buccaneers.com, archival league explainer)
- The Rules of the Draft (NFL Football Operations)
- Trade press (CBS Sports): Every Super Bowl winner, score and MVP
- Trade press (CBS Sports): NFL one-point safety explained
- Trade press (CBS Sports): NFL rule changes for 2026
- Trade press (ESPN): Inside the NFL challenge process
- Trade press (FantasyNerds): NFL 2026 season preview - new games, stadiums and rule changes
- Trade press (FBSchedules): NFL schedule release 2026, complete 18-week slate
- Trade press (Football Zebras): NFL owners approve rule changes for 2026
- Trade press (FOX 11 Los Angeles): Where will Super Bowl 2027 be held?
- Trade press (Fox News): Chiefs officially restore Arrowhead Stadium name
- Trade press (FOX Sports): What do NFL roster designations mean? (updated July 2025)
- Trade press (Front Office Sports): Goodell - 18-game season not on table until CBA talks begin
- Trade press (National Football Post): Bills to open Highmark Stadium Week 2 against Lions
- Trade press (National Football Post): NFL reaches 7-year deal with referees association
- Trade press (Pro Football Network): Why 11 NFL stadiums were renamed for the World Cup
- Trade press (Sports Illustrated): Does the NFL reseed after each round?
- Trade press (Sports Illustrated): Everything to know about the Lombardi Trophy
- Trade press (Sports Illustrated): Explaining five new NFL rules for 2026
- Trade press (Sports Illustrated): How rookie contracts work in the NFL
- Trade press (Sports Illustrated): NFL compensatory draft picks explained
- Trade press (Sports Illustrated): Ranking the current NFL scorebugs
- Trade press (Sports Illustrated): Texans' home stadium gets a familiar new name