This page explains how Aharon Yitchok Shapiro (USATT# 22502)'s rating went from 1980 to 1926 at the High Desert Spring Tournament held on - 14 Apr 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.