This page explains how Bogdan Plugowski (USATT# 69537)'s rating went from 1970 to 2009 at the Experior Club League event from 13 Dec 2019. 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.