This page explains how Lujian Song (USATT# 282364)'s rating went from 469 to 445 at the Spttc Saturday Junior League event from 16 Mar 2024. 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.