What happened: Atlanta ruled Tua out Friday for the season opener. [AP](https://www.thehour.com/sports/article/falcons-turn-to-rush-as-starting-qb-at-steelers-22427622.php)

Why it matters: The quarterback switch follows a disrupted preparation week: Rush took every first-team rep Thursday, according to the [Falcons](https://www.atlantafalcons.com/news/cooper-rush-takes-first-team-reps-in-wake-of-tua-tagovailoa-s-oblique-injury).

What to watch: Watch for Atlanta's next update on Tua's availability beyond the opener.