This page explains how Yukong Zhang (USATT# 71722)'s rating went from 1840 to 1840 at the Texas Wesleyan Open held on - 11 Sep 2010. 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.