This page explains how Thomas Shieh (USATT# 17171)'s rating went from 1583 to 1567 at the Golden Western States Open held on - 6 Feb 2000. 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.