This page explains how Eugene Toh (USATT# 1131861)'s rating went from 1172 to 1171 at the 2021 Atlanta Cup held on 23 Oct 2021 - 24 Oct 2021. 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.