This page explains how Stephan Henne (USATT# 1169816)'s rating went from 1377 to 1326 at the 2021 October Open @ Princeton Pong held on 9 Oct 2021 - 10 Oct 2021. 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.