This page explains how Shoujin Wang (USATT# 91612)'s rating went from 843 to 840 at the PTTC Saturday League event from 13 Jan 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.