This page explains how Han Xiao (USATT# 1819)'s rating went from 2059 to 2021 at the MDTTC November Open held on - 2 Nov 1997. 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.