NFL Updates Rule 15 to Allow Sideline Designees for Replay Challenges

Head coaches can now assign a staff member to throw the red flag, a shift following the 151 NFL replay challenges recorded in 2025.

NFL Rule 15, Section 1, Article 1(a) has been officially amended to permit a head coach or a pregame challenge designee to initiate a review by throwing a red flag onto the field of play. This procedural shift, confirmed by a league official on Monday, August 10, 2026, at 01:40 PM ET, follows a 2025 season that saw 151 coaches' challenges, the highest volume recorded since 2019. The new language requires the flag to be deployed before the subsequent legal snap or kick.

Under this updated protocol, head coaches are no longer the exclusive individuals authorized to declare a challenge. To utilize this option, a coach must notify game officials of their chosen staff member prior to the start of the contest. This adjustment was finalized during the summer rule book revisions, a period where the league implements technical tweaks that do not necessitate a formal vote from team ownership. Consequently, the change was not part of the announcements made during the NFL's annual meeting.

Strategic Shift for Sideline Staff

The introduction of a designee serves as a potential firewall against emotional decision-making. Some coaches have previously admitted to requesting reviews for reactive reasons rather than tactical advantages. By delegating the physical act of throwing the red flag to a specific member of the sideline staff, teams may implement a more calculated approach to officiating disputes. Despite the change in mechanics, head coaches are expected to remain central to the process via headset communication with their assistants.

Historical Context of the Red Flag

For decades, the head coach was the sole team representative permitted to trigger a replay review. The 2026 season marks the first time this responsibility can be shared or transferred to another staffer. The surge to 151 challenges in 2025 highlighted the increasing frequency of these stoppages, prompting the league to refine how they are initiated. Kevin Seifert, an ESPN staff writer and University of Virginia graduate who has covered the league since 2008, noted that these summer rule book tweaks are standard for finalizing operational details.

Implementation and Official Notification

For the designee's actions to be valid, the specific staff member must be identified to the officiating crew during the pregame window. If no designee is named, the traditional requirement for the head coach to throw the flag remains the default procedure. The league maintains that the timing of the challenge—occurring strictly before the next legal play—remains unchanged. This update ensures that while the person throwing the flag may differ, the window for intervention remains fixed under the existing replay framework. The move reflects an evolution in sideline management as teams seek to optimize their use of the two challenges typically allotted per game.