Bracho was recalled from Triple-A Reno on Tuesday.
Bracho opened up the season in the big leagues, but was quickly returned to the minors after allowing a home run in his only outing. The 23-year-old has been better at Triple-A, striking out six in four innings with a 2.25 ERA, but will likely occupy a lower-leverage spot in the bullpen for the time being. Archie Bradley was optioned to the minors is a corresponding move.