Under the NFL’s 2026 rules, a coach can challenge certain on-field rulings before the next legal snap or kick, while the Replay Official or league officiating leadership initiates review in specified situations such as scores, overtime, and plays after the two-minute warning. Replay can change a ruling only when the evidence meets the clear-and-obvious standard; not every call or penalty is reviewable.
Three ways an NFL play can receive replay attention
The 2026 NFL rulebook distinguishes a coach’s formal challenge, a review initiated by the Replay Official or league officiating leadership, and Replay Assist. They have different triggers and limits.
| Process | Who starts it | When it applies | Timeout cost | What it can do |
|---|---|---|---|---|
| Coach challenge | The head coach or the head coach’s pregame-designated challenge representative, by throwing the red flag | Eligible rulings, before the next legal snap or kick, subject to challenge and timeout availability | An available team timeout is required; an unsuccessful challenge costs one | Requests formal review of a reviewable ruling; a change requires clear and obvious video evidence |
| Replay Official- or league-initiated review | The Replay Official, Senior Vice President of Officiating, or a designee, as allowed by the rule | Specified situations including scores, Try attempts, overtime, plays after the two-minute warning, and certain turnovers or fourth-down rulings | No coach challenge is required; Rule 15 does not impose a team timeout cost for this initiation | Reviews the applicable play under Rule 15; all reviewable aspects of that play may be considered |
| Replay Assist | The Replay Official or designated officiating-department members | Specified objective matters, limited foul situations, and game-administration issues | Not a coach challenge and does not use a team timeout | Provides information or assistance within its limited scope; it does not make every judgment call reviewable |
These distinctions come from Rule 15 of the NFL’s 2026 Official Playing Rules. The league’s instant replay process overview describes how replay support works operationally.
How a coach challenges a call
Check the timing and eligibility
The head coach, or the coach’s pregame-designated challenge representative, must throw the red flag before the next legal snap or kick. A coach cannot use a challenge on a play reserved for Replay Official initiation, or on a ruling not listed as reviewable in Rule 15.
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Check challenge and timeout availability
Each team starts with at least two challenges. A team earns a third if at least one of its challenges succeeds, but it cannot receive a fourth. Every challenge requires an available team timeout. A team with no challenge or timeout remaining cannot initiate one. An unsuccessful challenge costs a timeout.
Know when the opportunity is lost
If a team commits a foul that prevents the next snap, it loses the right to challenge the preceding play. The team that did not foul may still challenge, and both teams may benefit from the resulting review. Attempting a challenge when the team is not permitted to do so costs a timeout; if no timeout remains, Rule 15 also specifies a 15-yard penalty enforced between downs.
When replay officials initiate a review
Some reviews do not depend on a coach throwing the flag. Under the 2026 rule, the Replay Official, Senior Vice President of Officiating, or a designee may initiate review in these specified situations:
- A play that begins after the two-minute warning in either half.
- Any play during overtime.
- A play on which either team scores.
- Any successful or unsuccessful Try attempt.
- Specified rulings involving an opponent’s interception or recovery of a fumble or backward pass, including a loose ball going out through the opponent’s end zone.
- A failed fourth-down attempt.
- Kicking-team possession at the end of a free kick or scrimmage kick.
- A player disqualification.
The Replay Official must initiate the review before the next legal snap or kick. These plays may be reviewed even when a foul occurred that, if accepted, would negate the on-field ruling. However, “automatically reviewed” does not mean every part of the play is reviewable or that each review requires a lengthy stoppage. The NFL describes scores and turnovers as automatically reviewed and says decisions can be collaborative or expedited; Rule 15 defines the governing scope and standard.
What can be reviewed
Rule 15 lists reviewable rulings rather than making all video-visible events reviewable. Its categories include possession, ball touching and location, boundaries and the goal line, line of scrimmage or line to gain, player count, certain game and penalty administration, player disqualification, and other specifically named situations.
Examples of reviewable questions
- Was a pass complete or incomplete? Did a passer’s hand begin moving forward while the passer had control? Did a runner fumble before being ruled down?
- Was a player down by contact? Was a forward pass or kick touched? Was a runner or receiver in bounds? Did a runner with possession break the plane of the goal line?
- Was the dead-ball spot short of, at, or beyond the line to gain? Were the correct number of players on the field?
- Was the proper down, clock handling, penalty administration, or foul spot applied in a situation Rule 15 makes reviewable?
- Was a pass forward or backward, an illegal forward pass or handoff made, or did a loose ball touch a foreign object? Rule 15 also allows review of a field-goal or Try attempt in limited specified circumstances.
If replay changes a dead-ball ruling and shows that possession was lost earlier, possession may be awarded to a player who clearly recovers the loose ball in the immediate continuing action. That can matter when a play was ruled an incomplete pass or a runner down, but replay shows a fumble.
What cannot be reviewed
Rule 15 expressly excludes several rulings, including whether an erroneous whistle sounded; whether a ball was illegally batted or kicked; whether a passer intentionally grounded a pass; whether an ineligible receiver was downfield before a pass; whether a receiver was illegally contacted; and whether a block was illegal. An aspect not listed as reviewable is also outside formal replay review.
Penalty questions need a distinction: penalty matters are not all categorically excluded. Rule 15 permits review of certain game- and penalty-administration issues and gives Replay Assist limited authority over objective questions and specifically enumerated foul circumstances. But a video angle does not make a prohibited or unlisted judgment call reviewable.
Replay Assist is different from a challenge
Replay Assist lets the Replay Official or designated officiating-department members provide information on correct rule application, assist with specified objective questions when clear and obvious video evidence exists, and address game-administration issues. Examples include penalty enforcement, proper down, clock, possession, pass completion or direction, touching of a loose ball or boundary, ball or player location relative to a line, and whether a player was down by contact when the field ruling did not say so.
The rule also lists narrow circumstances involving certain roughing-the-passer, intentional-grounding, unnecessary-roughness, facemask, horse-collar, tripping, and kicker-contact calls. Replay Assist does not let officials correct any subjective judgment call they see on video, and it does not prevent a coach or Replay Official from initiating an otherwise permitted challenge or review.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What happens during a replay review
The NFL says Art McNally GameDay Central (AMGC), at league headquarters, supports game reviews. A replay assistant monitors each game, and AMGC decision makers coordinate with the stadium Replay Official and on-field officials. The league says it has used Sony Hawk-Eye since 2021 to examine multiple time-synchronized camera angles. For a field review, selected synchronized angles can be sent to the referee’s Microsoft Surface Pro tablet.
The governing threshold is clear and obvious video evidence. As the NFL’s Inside Art McNally GameDay Central explainer puts it: “Overturning a ruling on the field requires clear and obvious video evidence.” The rulebook sets the standard; available angles do not guarantee that every close call can be resolved conclusively.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesThe NFL reported an average replay duration of 1 minute and 25 seconds in 2024. That is a league-reported historical average, not a 2026 season figure or a rule-imposed limit.
Why one part of a play can change while another cannot
Once a formal review begins, officials may examine every reviewable aspect of that play—not just the issue that triggered the review. That does not expand Rule 15’s list: non-reviewable judgment calls remain outside the review, while eligible facts and administration questions can still be considered. The result depends on both whether the question is reviewable and whether the video meets the required standard.
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