What happened: A pass from Marcus Mariota to Dyami Brown was ruled incomplete on the field and challenged by Dan Quinn. Replay officials confirmed the no-catch ruling without offering clarification on the decision.

Why it matters: The sequence nullified a potential touchdown for Mariota, who had entered the game in relief. The upheld call leaves ambiguity around the specific criteria used to confirm the incompletion.

What to watch: The league could address the mechanics of the replay review in its weekly officiating report.