This page explains how Dmitry Karagodsky (USATT# 195938)'s rating went from 1489 to 1478 at the Princeton Pong Leagues event from 17 Sep 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.