Baltimore, MD – The Baltimore Orioles have placed reliever Darren O’Day and outfielder Craig Gentry on the 10-day disabled list.

O’Day hurt his left hamstring while fielding a bunt on Tuesday night and Gentry sustained a left rib fracture when hit by a pitch in Atlanta on Friday.

It’s the second trip to the DL this season for O’Day, who missed a month with a hyperextended elbow.

This injury could also result in a lengthy absence. Manager Buck Showalter said, “Not sure we can put a timeframe on it. It’s pretty sore.”

It is O’Day’s fifth trip to the Disabled List since the conclusion of the 2014 season.  The sidearmer is 0-2 with a 3.60 ERA.

Gentry is batting .244 with a team-high 10 steals.

Baltimore recalled utility man Steve Wilkerson and right-hander Jimmy Yacabonis from Triple-A Norfolk. Wilkerson made his major league debut last week, and Yacabonis is expected to start Thursday against Seattle in place of Dylan Bundy, who went on the disabled list Tuesday.

(The Associated Press contributed to this post)