Bracho was optioned to Triple-A Reno on Tuesday.
The 23-year-old labored through 1.1 innings in Monday's season opener (40 pitches), and the team decided to swap him out with a fresh arm in Kyle Drabek. Bracho was gaining steam as a supersleeper for saves after posting a 15.4 percent swinging-strike rate and an eight percent walk rate in 13 appearances with the big club this year, but he may be on the shuttle regularly in the early going.