This page explains how Ralph Kissel (USATT# 7309)'s rating went from 1901 to 1833 at the 11th Annual Decatur Open held on - 17 Aug 2002. 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.