The Guardians optioned Espino to Triple-A Columbus on Wednesday.
As expected, Espino will head back to Triple-A after he was called up to serve as the Guardians' 27th man for Tuesday's doubleheader with the Reds. He appeared out of the bullpen in the Guardians' 2-0 loss in the second game of the twin bill, striking out three batters and issuing a walk over a scoreless inning.