Re: Ask Chuck
If everyone played the same tees and that was the only round they were played, there's a better than 75% chance the official ratings will be the same as the unofficial. However, if unofficial and official don't match, it's more likely the official ones will go down a point or two.
It has to do with excluding a player or two that were unofficial propagators who shot more than 60 points below their rating and get excluded as props when the official ratings are done. These poor shooters boost the SSA slightly in the unofficial calcs which inflates the unofficial ratings. You can look and see if there are any players with established ratings in the field who shot more than 60 points below their rating in that round to get an idea what might happen.
Rater of the tossed arc.