Once Gallardo throws off a mound, he'll likely need a couple of bullpen sessions before the O's consider a rehab assignment. Gallardo has never been on the disabled list for an arm injury until this, and both he and the O's are hoping the rest will give him a fresh arm for when he returns.
Gallardo exited his April 22 start at Kansas City with the injury, and was initially prescribed rest and a cortisone injection. He's been ramping up his throwing progressions since first throwing on Saturday.
Brittany Ghiroli has covered the Orioles for MLB.com since 2010. Read her blog, Britt's Bird Watch, follow her on Facebook and Twitter @britt_ghiroli, and listen to her podcast. This story was not subject to the approval of Major League Baseball or its clubs.