Mayer (foot) replaced an injured Caleb Durbin (finger) in the third inning of Wednesday's 8-6 loss to the Rockies. The former went 1-for-2 with a run scored and a critical fielding error.
Mayer was held out of starting lineups Tuesday and Wednesday due to a sore left foot. However, the fact he was able to play defense for seven innings indicates the injury wasn't too serious.