This page explains how Magdi H. Abdelmalak (USATT# 53587)'s rating went from 1625 to 1564 at the Western Open on the No America held on - 6 Oct 2000. 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.