This page explains how Aharon Yitchok Shapiro (USATT# 22502)'s rating went from 1977 to 1987 at the Power Pong November Open held on - 24 Nov 2002. 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.