This page explains how Gene Chou (USATT# 230777)'s rating went from 1940 to 1921 at the Princeton Pong Leagues event from 28 Jan 2020. 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.