This page explains how Jong Il Lee (USATT# 97401)'s rating went from 1974 to 1971 at the Spttc Saturday Night League event from 17 Jun 2023. 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.