This page explains how Alton Zhao (USATT# 273085)'s rating went from 429 to 445 at the ICC JOOLA Summer Open held on 14 May 2022 - 15 May 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.