This page explains how Mark Kasdorf (USATT# 26450)'s rating went from 900 to 917 at the Mohawk Valley TTC League event from 9 Feb 2004. 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.