Left handed pitcher Joe Thatcher is scheduled to undergo arthroscopic surgery on his left shoulder next Monday according to Don Norcross of the San Diego Union Tribune.

Thatcher has been sidelined since early in Spring Training and has received three cortisone shots since then. He said that if the doctors determine his labrum just needs to be “cleaned up,” he would be out for at least three months. If it needs to be repaired he would need nine months or maybe a year to make a comeback.

“It’s kind of a relief at this point,” Thatcher said. “It’s been a long, frustrating two months. We tried strengthening it. Now we’re going to go in and get it taken care of. I’m hoping for the best.”

The left handed pitcher was 1-0 with a 1.29 ERA with 45 SO in 35 innings throughout 65 games with the Padres in 2010.