This page explains how Alireza Hejazi (USATT# 63010)'s rating went from 2133 to 2123 at the California State Open held on - 1 Jul 2007. 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.