This page explains how Qi Guo (USATT# 80876)'s rating went from 1635 to 1831 at the NJTTC May Open held on - 16 May 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.