The Orioles received the news they expected – and were hoping could be avoided – Saturday.

Veteran reliever Darren O’Day’s left hamstring injury will require surgery, and he will be out for the rest of the season.

The recovery time for similar surgeries is roughly six months, Orioles manager Buck Showalter said.

O’Day, 35, was 0-2 with a 3.60 ERA in 20 games this season. He has dealt with injuries for a chunk of each of the past three seasons. This year, he lost time to a hyper-extended right elbow and now the hamstring.

The timetable should allow him to be back for spring training, and, according to Showalter, the surgery gives O’Day ““a lot better chance of it not being an issue again. And that’s important.”

The four-year, $31 million deal he signed before the 2016 season expires at the end of next year.

In his seven-season Orioles career, O’Day has compiled a 2.40 ERA in 391 games.

His absence will be felt in a bullpen that earlier this month returned to full strength after closer Zach Britton came back from Achilles surgery.

O’Day also was considered a potential trade chip in July, but based on service time he had full veto rights of any possible deal.