BALTIMORE -- Orioles reliever Darren O'Day has opted for season-ending surgery to repair a left hamstring injury.
Manager Buck Showalter said the recovery time from the operation would be six months, compared to a 10- to 12-week absence if the right-hander attempted to rehabilitate the injury.
Showalter said surgery gives O'Day "a lot better chance of it not being an issue again. And that's important."
The 35-year-old O'Day has struggled with injuries this season, missing a month with a hyperextended elbow before being sidelined for good after hurting his hamstring on June 26.
The side-armer is 0-2 with a 3.60 ERA in 20 games. He was placed on the 60-day disabled list on Friday.
Showalter says O'Day has not finalized the time and place of the procedure.