This page explains how Hoan Nguyen (USATT# 6411)'s rating went from 2199 to 2194 at the 1998 Southern Open held on - 25 Oct 1998. 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.