This page explains how Michael Shieh (USATT# 17295)'s rating went from 1815 to 1793 at the Valley of the Sun Open held on - 5 Dec 2004. 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.