The Atlanta Falcons’ quarterback situation has taken another unexpected turn.

Tua Tagovailoa has been ruled out for Sunday’s Week 1 matchup against the Pittsburgh Steelers after suffering an oblique injury during Thursday’s practice.

Tua was limited during Thursday’s session after appearing to grab his back and go down briefly during an individual drill. He did not return to practice, and Cooper Rush took all of the first-team reps.

Now, Rush will get the start.

This is obviously not how Atlanta expected things to go. The Falcons officially named Tua their Week 1 starter earlier this week, with Michael Penix Jr. ruled inactive as he continues recovering from the ACL injury he suffered last season.

Rush was originally expected to be Tua’s backup.

Instead, the veteran quarterback is now being thrown into the starting role in Week 1.

Rush brings plenty of experience, having started 16 NFL games throughout his career, but this is still a major change for an Atlanta offense that spent the offseason preparing for Tua to lead the team.

The Falcons will now have to hope Rush can keep the offense moving against Pittsburgh while Tua begins his recovery.

For Atlanta, this is yet another frustrating development at the quarterback position.

Cooper Rush is now the guy.