This page explains how Vishaal Kanitkar (USATT# 72838)'s rating went from 680 to 630 at the New Jersey TTC Youth League event from 20 Oct 2007. 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.