This page explains how Si-Dung Lam (USATT# 65505)'s rating went from 1611 to 1586 at the Sooner State Games Winter 2010 held on - 5 Feb 2011. 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.