This page explains how Changbo Lu (USATT# 202365)'s rating went from 2344 to 2309 at the 2022 Badger Open held on 23 Sep 2022 - 25 Sep 2022. 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.