Orioles re-signed RHP Stuart Pomeranz to a minor league contract.

Pomeranz is expected to miss all of 2013 following back surgery. He appeared in just three games for the Orioles last season, which represent the only three big league appearances in the 28-year-old's career.

Stuart Pomeranz will undergo surgery on his lower back this offseason.

This explains why Pomeranz was designated for assignment. According to MASN's Roch Kubatko, Pomeranz has a broken vertebrae and the surgery is expected to sideline him through the 2013 season. The Orioles will keep him in their organization, but he won't take up a spot on the 40-man roster.

The Orioles will not tender a contract to RHP Stuart Pomeranz.

Pomeranz owns a 4.49 ERA, 1.39 WHIP and 408/169 K/BB ratio over 522 2/3 minor league innings. He's unlikely to make an impact at the major league level in 2013.

Orioles activated RHP Stuart Pomeranz from the 60-day disabled list.

Pomeranz made a surprise jump up to the majors this season after languishing in the minors for many years, but he wound up missing lots of time with oblique and leg issues. He'll compete for a middle relief job in spring training if healthy.

Stu Pomeranz had a minor setback due to a leg issue related to his back.

Pomeranz was originally placed on the disabled list in late May with a left oblique strain. The 27-year-old right-hander was just starting to make progress with his throwing program, but it's not clear how long the setback will delay his return.

Stu Pomeranz is scheduled to have his back examined Tuesday in Florida.

Pomeranz was originally placed on the disabled list in late May with a left oblique strain. The O's were hoping he would be ready to begin a rehab assignment last weekend, but it's been delayed as he deals with back soreness. More should be known after the doctor visit.

Stuart Pomeranz's (oblique) rehab assignment will be delayed a few days due to a sore back.

He had been scheduled to start one Sunday. Pomeranz is no safe bet to be promoted to the major league club once he's healthy.

Stu Pomeranz (oblique) is expected to begin a minor league rehab assignment Sunday.

It's not clear which O's affiliate he'll be joining. The 27-year-old right-hander has been sidelined since lat May with a left oblique strain.

Stu Pomeranz (oblique) could be ready for a minor league rehab assignment by the middle of July.

Pomeranz landed on the disabled list in late May with a left oblique strain. He was recently moved to the 60-day DL, so he isn't eligible to return until the end of July.

Orioles placed RHP Stuart Pomeranz on the 15-day disabled list with a left oblique strain.

Pomeranz suffered the injury Sunday while warming up. He's likely to be sidelined for over three weeks.

Stuart Pomeranz is scheduled to undergo an MRI on his left oblique Monday.

Pomeranz was injured while warming up in the sixth inning and is expected to be placed on the disabled list. The Orioles could replace Pomeranz with a position player. Both Mark Reynolds and Endy Chavez are at Double-A Bowie and close to a return.

Orioles optioned RHP Stuart Pomeranz to Triple-A Norfolk.

Pomeranz did all he could to stick around, throwing four shutout innings. The O's chose to keep Dana Eveland instead, though, likely because he could throw more innings if need be with Jason Hammel (knee) banged up.

Orioles purchased the contract of RHP Stu Pomeranz from Triple-A Norfolk.

The Orioles need pitching depth after airing out their bullpen Sunday. Pomeranz, 27, has a 4.53 ERA in parts of nine seasons in the minors. Look for Luis Exposito to be sent down in a corresponding move.