Espinal was optioned to Triple-A Louisville on Saturday.
EDGE Analysis
Espinal was called up by the Reds on Thursday but will head back to the minors after he gave up three runs on four hits and a walk while striking out three in 2.1 innings Friday against the Cardinals. Hunter Greene (shoulder) was reinstated from the 15-day injured list to start the second game of Saturday's doubleheader against St. Louis.