The Diamondbacks have claimed Brad Bergesen, Kevin Goldstein of Baseball Prospectus tweets. The Orioles called Bergesen up earlier this week, but designated him for assignment without having him pitch in a game.
Bergesen, 26, had posted a 4.03 ERA with 4.6 K/9 and 2.6 BB/9 in 80 1/3 innings at Triple-A before getting promoted. He posted a 5.70 ERA with 5.4 K/9 and 2.9 BB/9 in 101 innings a year ago, when the Orioles used him in a hybrid role as a starter and reliever. The Diamondbacks had an empty 40-man roster spot going into the day.