This page explains how Xiaofeng Guo (USATT# 34134)'s rating went from 1728 to 1742 at the The Monon Center Fall Open held on - 26 Sep 2009. 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.