This page explains how Scott Kandell (USATT# 81500)'s rating went from 1621 to 1620 at the West Jersey Table Tennis Club League event from 19 Apr 2007. 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.