Espinoza was optioned to Triple-A Iowa on Wednesday, Maddie Lee of the Chicago Sun-Times reports.

EDGE Analysis

Espinoza was called up by the Cubs in early August and posted a 6.35 ERA and 1.76 WHIP in 5.2 innings over three relief appearances during his time with the major-league club. However, he'll head back to the minors after Steven Brault (illness) was reinstated from the COVID-19 injured list Wednesday.