The Orioles designated pitchers Mark Hendrickson, David Riske and Rick VandenHurk for assignment on Monday. In addition, left fielder Nolan Reimold, infielder Nick Green and pitchers Ryan Drese, Clay Rapada and Pat Egan were assigned to Baltimore's minor league camp. Hendrickson, 36, was signed Jan. 31 as a minor league free agent. He spent the past two seasons pitching in relief with the Orioles and lifetime is 57-74 with a 5.02 ERA.