This page explains how Ronald Arellano (USATT# 74523)'s rating went from 2004 to 1997 at the Golden Western Open held on - 28 Mar 2010. 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.