The only WS Game 3 played at the Phillies home park that wasn't delayed was in 1983, it seems, but in that game DeJesus made an error that led to the go ahead run on the wet turf.
I remember them starting Gm 3 in 1993 after CBS was done airing their big hit show "Rescue 911" with William Shatner and the rain hadn't let up any.