Three Season 17 'Grey's Anatomy' Stars Exited the Show Ahead of Season 18

Grey’s Anatomy fans…there’s only one week left until season 18 premieres on ABC!

The explosive premiere – which just got a new trailer – will air on September 30.

Unfortunately, three actors who were regulars on season 17 won’t be back for season 18 for a variety of reasons.

Click through the slideshow to see…