Intentional grounding on Tarvaris...

Avery

The Dog that Saved Charleston
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Official Rules:

For the first 28 minutes of each half, coaches must challenge an official's call to have it reviewed.

Coaches are allowed two challenges per game. If a call is not overturned, the challenging team loses a timeout.

No challenges will be recognized if a team has exhausted its timeouts

In the final two minutes of each half and in overtime, only the NFL replay assistant in the television booth or press box can call for a video review.

There is no limit to the number of replay reviews the replay assistant can request.

A review called for by the replay assistant is not tied to timeouts for either team.

The referee will make all determinations, regardless of time of game, after reviewing videos on a sideline monitor.

A time limit of 90 seconds has been placed on all video reviews.

Replay assistants will be part of a game's officiating crew.
 
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