The Giants optioned Morgan to Triple-A Sacramento on Tuesday, Justice delos Santos of The San Jose Mercury News reports.
The Giants promoted Morgan from Triple-A on Monday once Daniel Susac (knee) landed on the injured list, but the former's time with the big club will come to an end after just one day to make room for Andrew Knizner. Morgan has slashed .241/.323/.325 across 96 plate appearances since moving to Triple-A in May and is likely to remain there for the remainder of the season.