The Orioles announced the move before Saturday's game against the Red Sox and activated pitcher Alex Cobb in a corresponding move.
Tim Beckham is Baltimore's starting second baseman today, with Danny Valencia stepping in to take Beckham's usual spot at third base.
Orioles second baseman Jonathan Schoop has been placed on the 10-day disabled list with a strained right oblique muscle. They also had infielders Erick Salcedo, Luis Sardinas and Ruben Tejada in major league camp during spring training, but none are on the 40-man.
The Orioles don't have a lot of options for infielders.
The 26-year-old has one home run and three RBIs in 14 games this season after hitting 32 homers and driving in 105 runs in his first All-Star campaign last year. "It's honestly the most comfortable I've felt being in this locker room, somewhere I'm familiar with, in the clubhouse around guys that I know".
Schoop hopes to return in the minimum 10 days from his Grade 1 oblique strain, Rich Dubroff of PressBoxonline.com reports. Cobb didn't officially sign his four-year, $57MM deal until March 21, so he needed some extra preparation time in the minors to fully get ready for the season.