Webb has signed a minor league deal with the Giants and will report to Triple-A Sacramento, Steve Adams of MLB Trade Rumors reports.
Webb was released Wednesday by the Brewers.
Webb signed a minor league deal with the Brewers on Tuesday that includes an invitation to spring training.
Webb was signed by the White Sox on Friday, and assigned to Triple-A Charlotte, Dan Hayes of CSN Chicago reports.
Webb cleared waivers and was released by the Rays on Wednesday, the Tampa Bay Times' Marc Topkin reports.
Webb was designated for assignment Monday.
Webb (pectoral) has been activated from the disabled list.
Webb (pectoral) could be activated "in the next few days" after a successful rehab appearance Monday for Triple-A Durham, the Tampa Bay Times reports.
Webb (pectoral) will make his second rehab appearance for Triple-A Durham on Saturday, Marc Topkin of the Tampa Bay Times reports.
Webb's pectoral injury, which has landed him on the disabled list, traces back to a May 26 outing versus the Marlins, Marc Topkin of the Tampa Bay Times reports.