Rays reliever Jeff Beliveau will undergo surgery Thursday to repair a torn left shoulder labrum, the club announced. Beliveau has already been transferred to the 60-day DL, and will obviously miss significant time.

As Jay Jaffe wrote for Baseball Prospectus back in 2012, surgical repairs of torn labrums have had their share of success stories. But recovery is far from a sure thing, and the details — for example, whether there is also rotator cuff damage — matter quite a bit.

Beliveau, 28, had seemed poised to play an important role in the Tampa bullpen this season after a surprising 2014 campaign in which he posted a 2.63 ERA over 24 frames, backed by 10.5 K/9 against 2.6 BB/9 and a 2.47 FIP. He was off to a rough start this year, however, having allowed seven baserunners and four earned runs in just 2 2/3 innings. Though he has never been a hard thrower, Beliveau was down two ticks on his fastball.

The loss of Beliveau leaves the club somewhat lacking in terms of experienced left-handed relievers. C.J. Riefenhauser is the only southpaw on the active roster at present, though players like Everett Teaford, Jordan Norberto, Enny Romero, and Grayson Garvin all represent depth options in the upper minors.