Rules

Rules

NFL vs. NCAA D1 Football Rule Difference Cheat Sheet

Rule AreaNFLNCAA D1
Completed CatchReceiver must get two feet inbounds, or another body part besides hands, with control.Receiver only needs one foot, or another body part, inbounds with control.
Down by ContactRunner is down only after contact by a defender and then touching the ground with something other than hands or feet.Runner is down when any body part besides the hands or feet touches the ground, even without contact.
Defensive Pass InterferenceSpot foul and automatic first down.Spot foul if under 15 yards. If more than 15 yards, it is a 15-yard penalty and automatic first down.
Offensive Pass Interference10-yard penalty from the previous spot.10-yard penalty from the previous spot.
Clock After First DownsClock generally continues to run after a first down.Clock stops after a Team A first down only inside the final two minutes of each half, then starts on the referee’s signal.
Two-Minute RuleTwo-minute warning in each half.Two-Minute Timeout in the 2nd and 4th quarters.
Out of Bounds Clock RuleClock restarts on the ready-for-play unless the play happens inside the final 2 minutes of the 1st half or final 5 minutes of the 4th quarter. In those situations, it stays stopped until the next snap.Clock stops when the runner goes out of bounds and restarts based on NCAA timing rules, especially late in each half.
OvertimeRegular season has one 10-minute overtime period. If still tied, the game can end in a tie.Each team gets possession. Starting in the 3rd overtime, teams alternate two-point tries.
Extra Point / Two-Point TryKick try from the 15-yard line. Two-point try from the 2-yard line.Try is snapped from the 3-yard line for kick or two-point attempt.
Hash MarksHash marks are closer to the middle of the field.Hash marks are wider, creating a bigger field-side and boundary-side difference.
Fair Catch KickTeam may attempt a fair-catch kick after a fair catch.NCAA allows a fair-catch kick after a completed fair catch.
TargetingNo NCAA-style targeting rule with automatic review and disqualification structure.Player is ejected from that game, but does not automatically miss the first half of the next game, no matter when the foul happens.
Replay ChallengesReplay system uses NFL coach challenge and automatic review rules.Coaches receive replay challenges under NCAA rules, with additional challenge rules depending on success.

Clock Timing Focus

SituationNFLNCAA D1
Quarter Length15-minute quarters.15-minute quarters.
Play Clock40 seconds after most plays; 25 seconds after certain stoppages.40 seconds after most plays; 25 seconds after certain stoppages.
After First DownClock continues to run unless another stoppage applies.Clock stops only inside the final two minutes of each half after Team A gains a first down, then restarts on the referee’s signal.
Two-Minute Timing RuleTwo-minute warning in each half.Two-Minute Timeout in the 2nd and 4th quarters.
Out of BoundsClock restarts on the ready-for-play unless the play happens inside the final 2 minutes of the 1st half or final 5 minutes of the 4th quarter. In those situations, it stays stopped until the next snap.Clock stops when the runner goes out of bounds and restarts based on NCAA timing rules, especially late in each half.

Quick NCAA Focus

The biggest NCAA differences to remember are:

One foot inbounds for a catch.

A player can be down without contact.

Defensive pass interference is usually capped at 15 yards.

College overtime gives both teams possessions.