This page explains how Junwei Hou (USATT# 276126)'s rating went from 1406 to 1401 at the HITTA Weekly League event from 8 Jan 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.