This page explains how Robert Ertel (USATT# 5647)'s rating went from 1298 to 1290 at the Princeton Pong Leagues event from 23 May 2017. 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.