The Orioles scratched Mayo from the starting lineup for the first game of Sunday's doubleheader with the Tigers due to lower-back discomfort, Matt Weyrich of The Baltimore Sun reports.
The back issue presumably cropped up while Mayo was working out prior to the game. The Orioles will go with Weston Wilson as their starting third baseman and No. 6 batter in his place. It's unclear whether Mayo will be available off the bench or if he has a chance of returning to the lineup for the nightcap.