This page explains how Andranik Mehrabian (USATT# 8555)'s rating went from 1780 to 1851 at the Schaumburg Summer Open held on - 15 Jun 2002. 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.