Orioles reliever Brian Duensing injured his elbow adjusting his bullpen chair

Lachlan Cunningham/Getty Images

Orioles reliever Brian Duensing will undergo surgery on Friday to remove loose cartilage chips in his left elbow, which will keep him out of action for the next four to eight weeks, per Dan Connolly of BaltimoreBaseball.com.

How did Duensing suffer the injury? He said on Wednesday it happened after adjusting his bullpen chair on Monday, when the Orioles were in Texas to make up a rained out game against the Rangers from April 17.

Duensing signed a minor league deal with the Royals in February, then signed a new one in March, and opted out last month. The Orioles then snapped him up on a minor league contract shortly thereafter. The lefty had appeared in only seven games, but yielded four runs on nine hits and two walks with three strikeouts in 6 2/3 innings at the big league level.