This page explains how Steven Lowry (USATT# 7907)'s rating went from 2223 to 2245 at the Pottsgrove TTC event from 29 Jul 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.