This page explains how Alhasan Mohamed (USATT# 219890)'s rating went from 1349 to 1223 at the Princeton Pong Leagues event from 3 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.