This page explains how Donald Geeze (USATT# 6050)'s rating went from 1888 to 1864 at the Colorado Giant RR held on - 3 Jun 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.