LOS ANGELES -- Dodgers pitcher Julio Urias underwent season-ending anterior capsule surgery on his left shoulder Tuesday. The estimated recovery time is 12-14 months.

"The surgery was a success," manager Dave Roberts said. "I don't know in medical terms; all I know is in seeing the [email] thread from Dr. [Neal] ElAttrache, he's a lot more optimistic than he was when he was first going to do the surgery.

"It was very clean. There was some debridement he had to clean up. There was an attachment of some sort. All I know is that we as an organization, and Julio -- it's a very positive outcome."

The 20-year-old Urias was injured on one specific pitch in a game for Triple-A Oklahoma City, Dodgers president of baseball operations Andrew Friedman said last week.

Friedman said Urias felt the "tugging" in his last Triple-A outing on June 10 and that the lefty pitched two more innings, hitting 96 and 97 mph, but he was "really stiff" the next morning.

Urias was 5-2 with a 3.39 ERA last year as a rookie.

Unlike Tommy John elbow reconstructions, from which pitchers routinely return to their previous performance level, serious shoulder operations have a significantly lower success rate. But the Dodgers believe Urias could be an exception because of his age and relative soundness of the shoulder.