Atlanta optioned Ritchie to Triple-A Gwinnett on Wednesday.
Ritchie will give up his spot on the active roster to left-hander Martin Perez (elbow), who was reinstated from the 15-day injured list ahead of his scheduled start Wednesday versus the Padres. After tossing 3.2 innings in long relief during Tuesday's 8-3 loss, Ritchie was unlikely to be available out of the Atlanta bullpen for at least the next couple of days.