Timing Game clock, play clock, and timing rules Scrimmage Kicks Punts, touching, and possession rules Free Kicks Kickoffs and special situations Formations Legal formations and shifts Passing Plays Eligibility and forward pass rules Pass Interference DPI vs OPI judgment reps Fumbles Loose ball and recovery rules Scoring Touchdowns, safeties, and points Try Down PAT and conversion scenarios Penalty Enforcement Spots, offsets, and enforcement logic Instant Replay Reviewable plays and standards Personal Fouls Safety fouls and enforcement Targeting High-speed player safety decisions Holding / Blocking Line play and restriction rules 10-Second Runoff End-of-game timing scenarios Overtime Extra period procedures Touching / Batting Illegal touching situations Fair Catch Signals and protection rules Field Goals Kicking plays and outcomes UNS Unsportsmanlike conduct fouls Kick Catch Interference Receiver protection rules Other Situations Edge cases and uncommon plays