This page explains how Simon Xiang (USATT# 282400)'s rating went from 1203 to 1159 at the HITTA Weekly League event from 23 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.