This page explains how Fernand Marty (USATT# 29379)'s rating went from 987 to 991 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.