Perez, who looked serviceable in Sunday’s win over the Reds, took the place of Dave Williams 32, whose lone start in Perez’ place didn’t. Williams was designated for assignment and could wind up someone else’s property. Mike Pelfrey 34 was sent back to AAA New Orleans as Sosa is activated for Monday’s game in San Diego. Pelfrey had a short tryout in the bullpen last week but stands to get more regular work in the minors. Nice if he’d get a win.