This page explains how Michael Shieh (USATT# 17295)'s rating went from 1869 to 1863 at the Grand Canyon State Summer Game held on - 3 Jun 2006. 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.