This page explains how Chi-Sun Chui (USATT# 4879)'s rating went from 2452 to 2445 at the 2003 USA TT National Champions held on - 20 Dec 2003. 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.