This page explains how Steven Neumann (USATT# 29826)'s rating went from 1219 to 1217 at the Pottsgrove TTC event from 28 Jun 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.