This page explains how Fred E. Kistler (USATT# 7311)'s rating went from 1827 to 1818 at the Sportsfest VIII Singles & Dbls held on - 18 Jul 2004. 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.