This page explains how Kangjian Shao (USATT# 1173520)'s rating went from 1289 to 1240 at the 2022 March Open @ Princeton Pong held on 5 Mar 2022 - 6 Mar 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.