The Brewers optioned Ashby to Triple-A Nashville on Thursday.
Ashby put the Brewers in a 7-0 hole Wednesday in his MLB debut after he failed to escape the first inning, but Milwaukee spared him a loss by scoring 15 unanswered runs. The poor outing will still result in Ashby losing his spot on the active roster, as Nashville starter Alec Bettinger was called up in a corresponding move to aid a taxed Milwaukee bullpen that covered the final 8.1 innings of Wednesday's come-from-behind win over the Cubs.