Double-A Reading placed McGarry (side) on its 7-day injured list April 5.
McGarry wasn't included on Reading's season-opening roster while he works his way back from side tightness, but the right-hander isn't expected to be in store for a long-term absence. When he's been healthy, the 23-year-old has shown the ability to make bats miss at a prolific clip, as he owns a stellar 37.9 percent strikeout rate over 111.2 career innings in the minors.