BALTIMORE -- The Orioles made a pair of roster moves prior to Friday's game, recalling reliever Stu Pomeranz and catcher Ronny Paulino from Triple-A Norfolk, optioning catcher Luis Exposito to the Tides and designating infielder/outfielder Bill Hall for assignment.

Pomeranz has not allowed an earned run in 10 appearances this season with Triple-A Norfolk (five games, 10 innings) and Double-A Bowie (five games, 13 1/3 innings). He pitched more than one inning in nine of 10 appearances, striking out 35 and walking three. The right-hander made two scoreless appearances for the Orioles earlier this season after having his contract selected on May 7 and was victim to a roster crunch that led to him being sent down.

Orioles manager Buck Showalter said the club basically had Pomeranz's eligibility date circled on the calendar, and he was recalled for the team's first game after a 10-day stay in the Minors, the minimum non-injury period.

"[We] wanted to add the arm, keep the integrity of our bullpen itself as much as possible," Showalter said of a relief corps that entered Friday with a 2.31 ERA, the second-best mark in the Majors.

"The idea was to get Ronny back at some point, [he] went down there and played real well. I would like to see Expo get catching five or six days a week [for Norfolk]. He's still a very young man. [Hopefully he can] get his bat going a little bit."

Paulino batted .300 (9-30) with three RBIs in nine games for the Orioles earlier this season and hit 283/.313/.391 in 12 games for Norfolk after being optioned on May 7.

Exposito, who was recalled from the Tides on May 4, struggled at the plate going 1-for-17 (.059) in eight games for the Orioles.

Hall, who had his contract selected on May 12, batted .286 (2-7) with a solo home run, becoming the 22nd Oriole in franchise history to hit a home run in his first game with the club.

Showalter, Wieters excited for O's, Jones

BALTIMORE -- News of Adam Jones' potential contract extension circulated around the Orioles clubhouse Friday afternoon, adding more positive buzz around the first-place team.

Orioles catcher Matt Wieters said Jones has matured at the plate and agreed when asked if Jones could potentially evolve into a club leader.

"Oh, definitely," Wieters said. "I think, one, Adam can be that vocal guy that can speak up when something needs to be said. And, two, you can just watch him play. He plays hard every day, and he's going to give you the effort you need, especially from a leader.

"If you are going to lead, you have to give the kind of effort that he does every day."

Manager Buck Showalter has consistently praised Jones since his arrival for his hard-nosed play and hustle, and the O's manager endorsed keeping the 26-year-old in Baltimore for the foreseeable future.

"If you can grasp how the game is supposed to be approached from an effort standpoint, a lot of things open up to you," Showalter said. "There are different risks in everything in life; I think in this case the risk is not doing it. Especially with what he can potentially mean to this city, this fanbase and to his teammates. It's important."

Jones has made it no secret that he enjoys playing for Showalter and prides himself on playing the game the way it was intended.

"Buck treats us like men," Jones said. "As a man, I think it's my obligation to the fans, to the city of Baltimore, to the owners, to my teammates, to go out there and give three hours and play my [butt] off. I think that's the easy part. I think the hardest part is playing the game.

"[Yankees captain Derek] Jeter told me this numerous times, 'Don't ever stop hustling. Don't ever stop hustling. You hit the ball, you got four seconds to get down the line.'"

Tidbits

• Left fielder Nolan Reimold (herniated disk) received his second epidural injection on Friday and is resting at home.

• Third baseman Mark Reynolds (left oblique strain) went 1-for-2 with a homer and two walks in an extended spring game Friday afternoon, and he will head -- along with outfielder Endy Chavez -- to Double-A Bowie on Saturday to start a rehab assignment. Zach Britton (left shoulder impingement) is also scheduled to make his first rehab start for Bowie in that game.

• Second baseman Brian Roberts played in a third consecutive game Friday for Double-A Bowie, going 0-for-1 with a sacrifice fly in a 5-3 loss to Altoona. Showalter said Roberts would probably take Saturday off.

• Taylor Teagarden (lower back injury) will head back to extended spring in Sarasota, Fla., while reliever Matt Lindstrom (torn right middle finger ligament) is expected to head to Sarasota to start his rehab in the next day or two.