The Orioles will designate lefty Mark Hendrickson for assignment to open a spot for Troy Patton, tweets Jon Paul Morosi of FOX Sports. The team has since confirmed the move. Patton had been on the restricted list as he attended a court hearing for an offseason DWI arrest.
Hendrickson, 37, spent most of the season at Triple-A but tossed 11 forgettable innings in the Majors.