NFL Tweaks Replay Challenge Rules Ahead of 2026 Season

Beginning in 2026, NFL head coaches will no longer be the sole individuals allowed to invoke the red flag for replay challenges. According to a league insider, coaches can now delegate the responsibility of the challenge to another member of their sideline staff, but they must inform officials of the designated person prior to kickoff.

This alteration did not stem from the rule changes approved during the NFL's annual meeting; rather, it represents one of the minor modifications the league makes each summer when finalizing its rulebook for the upcoming football season, adjustments that do not necessitate owner approval. The revised rulebook now specifies that either the head coach or a designated staff member can invoke the flag before the next snap or kick.

Instant replay debuted in 1986, but coaches were only granted the ability to challenge calls using the red flag in 1999. Prior to this, reviews were initiated by a replay official in the booth, not by the sideline coaches. Since then, the technology behind replay has undergone continuous evolution, with high-definition video introduced in 2007, accompanied by freeze-frame tools and additional camera angles to work with.

Prior to the 2021 season, the league introduced the Hawk-Eye SMART system at Art McNally GameDay Central (AMGC), which serves as the central hub for all replay reviews. This system provides the NFL with access to every perspective of the field, and AMGC staff monitor the action throughout each game, stepping in whenever a play requires review.

The latest adjustment to the challenge process follows an eventful year for replay challenges, as coaches reportedly utilized the red flag 151 times in 2025, the highest frequency since 2019. Certain coaches have admitted to challenging plays out of frustration rather than strategic considerations, suggesting that having someone else make the call could potentially mitigate the emotional aspect of the decision.