The Orioles made a quartet of roster moves before Friday's game against Kansas City, recalling catcher Ronny Paulino and right-hander reliever Stu Pomeranz from Triple-A Norfolk, while optioning catcher Luis Exposito to Norfolk and designating infielder Bill Hall for assignment.
The move gives the Orioles 13 pitchers — and eight relievers — while the club is limited to a three-man bench.
Pomeranz, who threw four scoreless innings in two relief appearances during a week-long major league stint earlier this month, adds another diverse arm that can work in short or long relief. Friday was the first day Pomeranz was eligible to return after being optioned May 13.
"We wanted to add the arm, keep the integrity of our bullpen and its health as much as possible," Orioles manager Buck Showalter said. "I think it's more about our bullpen, too. It's a strength and I want to protect it as much as possible and we think he can be a contributor down there."
Paulino, who made the Orioles' Opening Day roster but was optioned to Norfolk on May 7, hit .283/.313/.391 in a 12-game stay in Norfolk. Exposito has just one hit in 21 plate appearances with the Orioles, hitting .059. He also struggled calling games behind the plate.
"The idea was to get Ronny back at some point," Showalter said. "He went down there and played real well and we'd like to see Expo catching five, six days a week. He's still a very young man."
The 32-year-old Hall was used sparingly since his contract was purchased May 12, playing in just six games and going 2-for-7. Showalter said he hoped Hall cleared waivers so he could be outrighted back to Norfolk.