This page explains how Ronald Cheung (USATT# 219639)'s rating went from 838 to 838 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 18 May 2019. 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.