This page explains how Robert Ertel (USATT# 5647)'s rating went from 1255 to 1215 at the Princeton Pong Leagues event from 18 Feb 2020. 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.