This page explains how Shoujin Wang (USATT# 91612)'s rating went from 681 to 631 at the PTTC Saturday League event from 18 Jun 2022. 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.