This page explains how Steve Isaacson (USATT# 6924)'s rating went from 1797 to 1792 at the SPINvitational held on - 29 Dec 2008. 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.