This page explains how Heng-Chi Chang (USATT# 48772)'s rating went from 2057 to 2038 at the NTTC January Open held on - 22 Jan 1995. 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.