This page explains how Qixuan Gu (USATT# 270630)'s rating went from 960 to 951 at the HITTA Weekly League event from 4 Mar 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.