Mejia (thumb) was placed on the 10-day injured list Monday.
Mejia was revealed to have a left thumb contusion Monday, and his placement on the injured list will give him extra time to recover while allowing the Padres to add depth at catcher on the 28-man roster. Luis Torrens was recalled in a corresponding move, but Austin Hedges should handle the majority of the duties behind the plate while Mejia is sidelined.