This page explains how Aharon Yitchok Shapiro (USATT# 22502)'s rating went from 1970 to 1977 at the Huntsman World Senior Games 2021 held on 4 Oct 2021 - 7 Oct 2021. 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.