This page explains how Gene Chou (USATT# 230777)'s rating went from 1915 to 1871 at the LYTTC Giant RR - September 2021 held on 18 Sep 2021 - 19 Sep 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.