This page explains how Gia Leu (USATT# 17561)'s rating went from 1902 to 1891 at the Grand Canyon State Games held on - 13 Mar 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.