This page explains how Magdi H. Abdelmalak (USATT# 53587)'s rating went from 1524 to 1490 at the San Diego Open held on - 11 Jun 1995. 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.