How NFL Coach's Challenges Work Explainer
An NFL head coach initiates a challenge by throwing a red flag before the next snap. The coach must have a timeout available and the play must involve a reviewable ruling. If the challenge fails, the team is charged one timeout.
Each team begins with two coach's challenges. When both are successful, the team earns a third. A successful review reverses or modifies the ruling only when replay provides clear evidence under the applicable standard; otherwise the on-field decision stands.
Coaches do not challenge every reviewable moment. The replay official controls reviews after the two-minute warning, and scoring plays and turnovers receive automatic replay oversight. Officials can also address certain administrative review matters without a coach spending a challenge.
Some judgment calls are not reviewable, and the rulebook defines exactly which aspects of a play may be changed. A coach must act quickly because the next legal snap closes the window. Watch for the red flag, then the referee's headset and final announcement.
Two initially, with a third awarded if both of the first two are successful.
The team loses a timeout.
No. The replay official controls reviews in that period.
Explore more "Explainers"
Discover additional explainers across politics, science, business, technology, and other fields. Each explainer breaks down a complex idea into clear, everyday language—helping you better understand how major concepts, systems, and debates shape the world around us.