The Diamondbacks optioned Hughes to Triple-A Reno on Thursday.
Hughes has given up seven earned runs in 3.2 innings over his last two big-league outings, giving him a 10.13 ERA and 2.25 WHIP on the year. In an effort to get back on track, he'll head to Reno, where he owns a 1.83 ERA and 1.35 WHIP through 19.2 frames. Joe Jacques was recalled from Triple-A in a corresponding move.