This page explains how Ray A. Robertson (USATT# 63884)'s rating went from 1126 to 1098 at the Arizona Sizzler held on - 4 Oct 2009. 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.