• The Orioles transferred Brian Roberts to the 60-day DL to clear a 40-man roster spot for Saturday's starter Jair Jurrjens. Roberts, 35, was placed on the 15-day DL with a right hamstring strain on April 5. Alex Burnett was optioned back to Triple-A Norfolk to create a spot on the 25-man roster.
• Taylor Teagarden had the splint removed from his left thumb on Friday, although there are no imminent plans for him to go out on rehab assignment.
• Jake Pettit made Saturday's start for Triple-A Norfolk in Arrieta's place.
• Orioles Hall of Famer Brooks Robinson turned 76 on Saturday.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.