This page explains how Si-Dung Lam (USATT# 65505)'s rating went from 1653 to 1650 at the Sooner State Games held on - 26 Jun 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.