O'Flaherty (shoulder) underwent an MRI on Sunday, which revealed no structural damage. The Athletics will shut him down from throwing until O'Flaherty reports no pain in his shoulder, Susan Slusser of the San Francisco Chronicle reports. O'Flaherty landed on the 15-day disabled list Saturday with a shoulder strain. Although the MRI revealed no structural damage, there are signs of inflammation in the shoulder joint. While it's a good sign that there's no serious damage, shoulder injuries in pitchers tend to be treated with extra caution.