This page explains how Donald Geeze (USATT# 6050)'s rating went from 1917 to 1861 at the Oklahoma City Team Tournament held on - 4 Oct 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.