This page explains how Kenneth M. Dukes (USATT# 43169)'s rating went from 1730 to 1725 at the 1999 Club Challenge and RR held on - 8 Aug 1999. 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.