This page explains how Hannah Song (USATT# 203187)'s rating went from 2207 to 2187 at the ICC JOOLA Spring Open held on 4 Mar 2023 - 5 Mar 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.