This page explains how Phillip Moy (USATT# 8529)'s rating went from 1663 to 1658 at the Schaumburg Open held on - 19 Aug 2000. 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.