The Giants optioned Llovera to Triple-A Sacramento on Sunday, Evan Webeck of The San Jose Mercury News reports.
Llovera will lose his spot on the 26-man active roster after the Giants reinstated Alex Cobb (neck) from the 15-day injured list ahead of his scheduled start Sunday against the Pirates. During his week-long stay in the big leagues, Llovera tossed a scoreless inning in each of his relief appearances.