This page explains how William T. Garrard (USATT# 42037)'s rating went from 1689 to 1633 at the 2000 USATT National Championsh held on - 17 Dec 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.