08/08/12 6:17 PM ET
Umpire Miller exits after taking pitch to mask
By Jane Lee / MLB.com
Miller took a pitch from Zack Greinke to the mask in the first inning and appeared to be dazed as a trainer came out to check on him.
Miller remained in the game but labored after he was hit, as he rung up Oakland's Brandon Inge and Cliff Pennington with just two strikes in back-to-back innings.
Second-base umpire Dan Iassonga replaced Miller behind the plate.