Webb (pectoral) will make his second rehab appearance for Triple-A Durham on Saturday, Marc Topkin of the Tampa Bay Times reports.
The veteran reliever reported no setbacks after his first appearance, which came Wednesday night. Webb surrendered two hits and an earned run over 0.2 innings in that contest, with both outs coming on strikeouts. Assuming he emerges from Saturday's outing without further issues, the 30-year-old could re-join the major league club during next week's road trip.