Athletics signed LHP Pedro Viola to a minor league contract.

Viola failed to appear in the majors in 2012 and was released by the Orioles this offseason. The 29-year-old left-hander will continue to serve as organizational depth.

Orioles sent LHP Pedro Viola outright to Triple-A Norfolk.

Viola was designated for assignment last week and passed through waivers easily. The 28-year-old southpaw posted a 2.04 ERA over 39 2/3 innings at Double-A Bowie in 2011.

Orioles designated LHP Pedro Viola for assignment.

Viola was cleared to make room for the newly-acquired Taylor Teagarden on the 40-man roster. The 28-year-old left-hander appeared in four games with the O's this season, but spent the majority of the year with Double-A Bowie, posting a 2.04 ERA and 40/13 K/BB ratio over 39 2/3 innings. He could draw some interest.

Orioles optioned LHP Pedro Viola to Double-A Bowie.

It took less than five hours for Viola to get demoted, and he didn't even see any action in Sunday's game. The left-hander will return to a 2.10 ERA at Bowie.

Orioles recalled LHP Pedro Viola from Double-A Bowie.

Viola has been up-and-down multiple times this season, faring much better for Bowie (2.10 ERA) than he has in his four games for the O's (9.82 ERA). He'll give them another lefty in the pen.

Orioles optioned LHP Pedro Viola to Double-A Bowie.

Viola has been up and down a few times now, but has only appeared in four games. In those four appearances, he has yielded eight baserunners and four runs in only 3 2/3 innings. Troy Patton will take his spot in the Orioles' mighty bullpen.

Orioles recalled LHP Pedro Viola from Triple-A Norfolk.

Viola has tossed 1 2/3 scoreless innings for the O's this season in one appearance despite multiple stints with the club. He'll give them another lefty in the bullpen.

The Orioles are likely to recall Pedro Viola from Triple-A Norfolk to take Brian Matusz's spot on the roster.

With Clay Rapada recently designated for assignment, the O's could use another lefty in their bullpen. Viola has been up-and-down a few times with the O's this season but has appeared in just one game for them, tossing 1 2/3 scoreless innings. He has a 2.25 ERA and 25/9 K/BB ratio in 28 innings for Norfolk.

Pedro Viola will join the Orioles Friday.

He'll be around in case Jeremy Guthrie needs a trip to the disabled list. Guthrie left Thursday's start with a back issue and will receive an MRI Friday. Viola has been up-and-down a couple times this year but has appeared in just one game, tossing 1 2/3 scoreless innings.

Orioles optioned LHP Pedro Viola to Triple-A Norfolk.

Viola tossed 1 2/3 scoreless innings while he was up with the big club, but he's sent down in order to clear a spot for Derrek Lee. The left-hander should get another shot at some point.

Orioles recalled LHP Pedro Viola from Double-A Bowie.

Viola boasts a 1.80 ERA and has struck out over a batter per inning at Bowie this season. He's likely to be sent back down Wednesday, when Brian Matusz is expected to come off the DL to start.

The Orioles are bringing in left-handed reliever Pedro Viola to join them in Oakland.

Viola hasn't been officially recalled, but it sounds like he'll be added to the roster in place of another reliever Saturday. Viola has a 1.80 ERA in 20 innings out of the pen for Double-A Bowie.

Orioles optioned LHPs Pedro Viola and Troy Patton, RHP Chorye Spoone and SS Pedro Florimon Jr. to Triple-A Norfolk.

They also sent RHP Luis Lebron to Double-A Bowie. Viola and Patton had outside shots to claim one of left-handed spots in the bullpen, but they'll begin the year in the minors. Spoone is still working his way back from shoulder surgery and needs to build up some innings.

Orioles recalled LHP Pedro Viola from Double-A Bowie.

Viola had a 3.59 ERA and 64/19 K/BB ratio over 23 games (10 starts) with Double-A Bowie this season. They'll use this time to evaluate whether he is worth protecting from the Rule 5 draft.

The Orioles are expected to call up left-hander Pedro Viola on Tuesday.

Viola struggled with Triple-A Norfolk before posting a 3.59 ERA and a 64/19 K/BB ratio over 62 2/3 innings with Double-A Bowie. The 27-year-old has limited left-handed batters to a .233 batting average during his minor league career, so he could still have a career as a specialist.

Orioles claimed LHP Pedro Viola off waivers from the Reds and optioned him to Triple-A Norfolk.

Viola was designated for assignment by the Reds earlier this month. The 27-year-old southpaw managed an underwhelming 5.47 ERA and 57/33 K/BB ratio over 49 1/3 innings with Triple-A Louisville last season, but has some value as a left-handed specialist.