This page explains how Glenn Wambold (USATT# 12851)'s rating went from 949 to 940 at the AZ PTTC Monday event from 15 Oct 2018. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.