This page explains how Simon Xiang (USATT# 282400)'s rating went from 1159 to 1144 at the HITTA Weekly League event from 19 Apr 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.