Originally Posted by glfrjack

So... I'm trying to wrap my mind around what the USGA says about determining whether or not a club is conforming or non-conforming. If a clubhead cannot be found on either list, is it conforming or non-conforming (assuming the clubhead was manufactured after 1999)?

Also... is it true that the clubhead has to be on the conforming list in order to be played in a USGA event? Or does it just have to NOT be on the non-conforming list?

(I sorta feel like that red zone/white zone arguement from "Airplane")