This page explains how Thomas Maddux (USATT# 55555)'s rating went from 1644 to 1640 at the Oded Amitz-Lev 1st Annual Memo held on - 18 Sep 1994. 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.