This page explains how Tom Metz (USATT# 73482)'s rating went from 1209 to 1219 at the West Morris Area YMCA event from 24 Nov 2006. 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.