This page explains how Kagan Feng (USATT# 218625)'s rating went from 2179 to 2163 at the ICC JOOLA Summer Open held on 6 May 2023 - 7 May 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.