This page explains how Tom Dannenfelser (USATT# 63160)'s rating went from 1821 to 1790 at the St. Joseph Valley Open held on - 28 May 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.