This page explains how Vishaal Kanitkar (USATT# 72838)'s rating went from 647 to 638 at the New Jersey TTC Youth League event from 26 Oct 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.