The Orioles announced that they have claimed catcher Dom Keegan off waivers from the Rays and optioned him to Double-A Chesapeake. In other moves, they designated right-hander Kyle Nicolas for assignment and reinstated lefty Cade Povich from the 15-day injured list. The Orioles optioned Povich to Triple-A Norfolk. The 25-year-old Keegan entered the season as Baseball America‘s 19th-ranked Rays prospect, his third straight year in the organization’s top 20.