This page explains how C. Scott Williams (USATT# 49946)'s rating went from 1326 to 1298 at the Valley of the Sun Open held on - 7 Dec 2008. 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.