If Cain (flexor tendon) comes away from that start without feeling any pain, he will make his next start for Triple-A Sacramento. Bochy said he expects Cain to complete at least three Minor League starts before he returns to the Majors, where he has not pitched since June 9, 2014.
After a successful bullpen session Monday, Peavy is scheduled to pitch for Sacramento on Thursday and is expected to throw about 85 pitches.
The Giants expect Peavy (back) to receive at least one more start after Thursday before activating him from the disabled list.
Jamal Collier is a reporter for MLB.com. Follow him on Twitter at @jamalcollier. This story was not subject to the approval of Major League Baseball or its clubs.