This page explains how Dahua Song (USATT# 223130)'s rating went from 1979 to 1979 at the NJTTC Tuesday V League event from 23 Nov 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.