Kirby, who has been out all season as he recovers from shoulder inflammation, made his first rehab appearance on Sunday for Triple-A Tacoma. His results looked good, but what happens next is the most important thing to see.

Mariners right-hander George Kirby, who was shut down in early March with shoulder inflammation, made his first rehab start Sunday with Triple-A Tacoma.

Mariners pitcher George Kirby, who has yet to make his season debut, will start for Triple-A Tacoma as he works his way back from a shoulder issue.