This page explains how Ethan Guo (USATT# 271320)'s rating went from 615 to 600 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 31 May 2022. 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.