This page explains how Xing Xiong (USATT# 30401)'s rating went from 2034 to 2021 at the Brooklyn TTC July Open held on - 20 Jul 2008. 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.