Altavilla has been transferred to the 60-day disabled list with a Grad 1 flexor strain in his right elbow and is likely to remain sidelined until the start of September.
Morton left his last outing due to right shoulder discomfort and it is undetermined if he will make his next scheduled start Sunday against the Orioles.
Gustave is on the 60-day disabled list recuperating from a UCL reconstruction procedure on his right elbow and is expected to miss the remainder of the season.
McCann has landed on the 10-day disabled list after undergoing arthroscopic right knee surgery but is likely to return sometime toward the start of September.
Devenski has landed on the 10-day disabled list with tightness in his left hamstring. Barring any setbacks, he is lining up to return by the beginning of September.
Marisnick has been placed on the 10-day disabled list with a left groin strain and it is undetermined if he will be activated during the start of September.