Scott Elbert has arthroscopic elbow surgery, expected to miss Opening Day.

Scott Elbert underwent a left elbow arthroscopy today in Los Angeles, leaving the Dodgers without one of their top left-handed relievers to start spring training.Scott  Elbert He is not expected to be ready by opening day, according to a source.

The 40-minute procedure was performed by team physician Dr. Neal ElAttrache after a new area of cartilage damage was discovered and debrided. Elbert, who had a different elbow procedure Sept. 19 that ended his 2012 season, will start his physical therapy in three days and a throwing program in six weeks.

Elbert, 27, went 1-1 with a 2.20 ERA in 43 relief appearances last season. Right-handers hit .170 against him and lefties hit .271 – a strange split for a southpaw. He and J.P. Howell were expected to be the team’s top left-handed relievers.

In a crowded Dodgers bullpen, at least two players’ chances of making the opening day roster just improved.

Left-hander Paco Rodriguez allowed one run in 11 appearances over 6 2/3 innings as a rookie last year, though his control wavered against right-handers in a small sample size (two unintentional walks in 2 2/3 innings). Right-hander Shawn Tolleson had more success against right-handers out of the bullpen as a rookie (.152 batting average) but was atrocious against left-handers (.316). Non-roster invitee Peter Moylan, aiming to re-establish himself after a series of injuries cut short his time in Atlanta, could also grab a spot.