Kolozsvary was recalled by the Reds on Wednesday.
Kolozsvary was added to the Reds' taxi squad Saturday, and he'll now join the active roster to provide depth behind the plate after Tyler Stephenson (concussion) was placed on the 7-day injured list Wednesday. The 26-year-old hasn't yet made his major-league debut, and Aramis Garcia will likely see most of the playing time at catcher in Stephenson's absence.