This page explains how Alhasan Mohamed (USATT# 219890)'s rating went from 1301 to 1253 at the Princeton Pong Leagues event from 14 May 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.