This page explains how Scott Kandell (USATT# 81500)'s rating went from 1672 to 1571 at the West Jersey Table Tennis Club League event from 3 Dec 2009. 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.