This page explains how Dennis M. Spellman (USATT# 10185)'s rating went from 1661 to 1648 at the West Jersey Table Tennis Club League event from 18 May 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.