This page explains how Ed Cohen (USATT# 25364)'s rating went from 1539 to 1513 at the USA National Table Tennis Cham held on - 22 Dec 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.