Why wait until tomorrow when you can announce your roster moves tonight?
The Orioles placed Vladimir Guerrero on the 15-day disabled list, retroactive to July 11, and optioned left-hander Pedro Viola to Double-A Bowie.
Outfielder Matt Angle and left-hander Troy Patton have been recalled from Triple-A Norfolk and will be in uniform tomorrow afternoon.
Patton will be used in long and middle relief. There are no current plans to place him in the rotation.