This page explains how Richard G. Tompson (USATT# 10615)'s rating went from 1820 to 1810 at the St. Louis Fall Open held on - 2 Nov 1996. 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.