O'Brien has been shifted to the 60-day injured list while recovering from a surgery to repair a right flexor strain, and he will miss an undetermined length of time.
Gallegos has been shuttled to the 15-day injured list with a right shoulder impingement, and he will be shut down until sometime in May at the earliest.
Edman has been shifted to the 60-day injured list while recovering from right wrist surgery, and he will remain sidelined until at least the end of May.
Tarnok has been sent to the 60-day injured list while recovering from right hip surgery, and he will be out of commission until at least the end of May.
Alexander has been shuttled to the 15-day injured list due to a stress reaction in his left rib, and he is not expected to be activated until the latter part of May.
Waldichuk has been posted to the 60-day injured list while recovering from surgery to repair the UCL and flexor in his left elbow. He is not expected to make his season debut until the latter part of May.