Moore was sent down to Triple-A Tacoma on Friday, Ryan Divish of the Seattle Times reports.

With Felix Hernandez returning from his shoulder injury Friday, Moore will be the casualty in the rotation as the 23-year-old heads back to Tacoma. During his start Thursday, Moore went seven innings, only allowing three earned runs off six hits. He didn't allow a single walk but added just four strikeouts. The top prospect is sure to get another chance on the bump with the Mariners very soon.