Junis has wound up on the 60-day injured list with a right shoulder impingement, and he is expected to remain sidelined until at least the early part of June.
Miley has hit the 60-day injured list with left elbow inflammation, and he will miss the remainder of the season while recovering from Tommy John surgery.
Clarke is on the 15-day injured list after having surgery to repair a meniscus tear in his right knee, and he is not expected to be activated until the end of May.
Peterson is on the 60-day injured list after having surgery to repair a torn labrum in his left hip, and he is likely to remain shut down for at least two months.