Harrison was optioned to Triple-A Sacramento on Friday, Evan Webeck of The San Jose Mercury News reports.

EDGE Analysis

Harrison has struggled over his last three starts, surrendering 12 earned runs across 14.2 frames. Danny Emerman of KNBR 680 San Francisco also reports that Harrison had lost velocity in his last outing, a factor that may have played a part in the team's decision to take him out of the big-league rotation. Barring an injury to a pitcher, Harrison will have to spend at least 15 days in the minors. Ross Stripling (back) was activated in the corresponding move.