The Giants optioned Brebbia to Triple-A Sacramento on Tuesday.
Brebbia was recalled from Sacramento on Monday after Johnny Cueto landed on the COVID-19 injured list, but he heads right back to Triple-A now that Cueto is healthy and active. It's possible the righty finds himself back in San Francisco around the time when rosters expand, as he's a veteran arm who can provide much-needed bullpen depth in the last month of the regular season.