This page explains how Robert Ertel (USATT# 5647)'s rating went from 1295 to 1289 at the Princeton Pong Leagues event from 29 Jan 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.