Bracho was optioned to Triple-A Reno on Monday, Jack Magruder of Fanrag Sports reports.
Bracho received the demotion with David Peralta returning from the 15-day DL. The 23-year-old has been relatively unimpressive during a couple of brief stints with Arizona this year, yielding nine hits, five walks and five earned runs over just six innings of work. He'll likely stay in the minors until the D-backs need another fresh arm in the bullpen.