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08/08/12 6:17 PM ET

Umpire Miller exits after taking pitch to mask

OAKLAND -- Home-plate umpire Bill Miller exited Wednesday's series finale between the host A's and Angels with two outs in the bottom of the sixth inning, having taking a fastball to his mask earlier in the game that may have influenced a pair of premature strike three calls.

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.

Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.