This page explains how Gerald Chang (USATT# 24456)'s rating went from 1650 to 1644 at the 4th Everbright Open TT Champio held on - 10 May 2008. 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.