This page explains how JIAN Mao (USATT# 272209)'s rating went from 963 to 951 at the HITTA Weekly League event from 11 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.