Peavy (back) will work at the team's spring training facility to rehab while the team is on the road and hopes to face hitters in a simulated game, the San Francisco Chronicle's Henry Schulman reports. He threw 40 pitches off the mound Friday and felt good then and Saturday during his recovery day. While Peavy is not yet ready for a rehab assignment, he seems to be making solid progress lately and could still rejoin the Giants' rotation in late-May/early-June.