Originally Posted by Pave
I think you'll find the reason why you won't find anything is because the USGA is the governing body for the amateurs, so I guess it is assumed it applies to amateurs.
I think the majority of the U.S. Open field would be shocked to hear this, as would whatever fraction of guys on TOUR need a new putter in 20 months or so.
I see where the confusion comes from though.
Many big national amateur golf events in the U.S. are run by the USGA, and all (even those that aren't run by them) are under USGA rules.
Worth noting: USGA and NCAA have different rules of amateur status for golfers.
By the way, even if the USGA official handicap system did
limit itself to amateurs, it's easy enough to compute a handicap from the 20 most recent rounds (or at least approximate it, if they're in a tournament or at Augusta). TST ran an article
about this a little over seven years ago, showing just how dominant Tiger was at the time (among other things).