This page explains how Roland Buelow (USATT# 230674)'s rating went from 450 to 446 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 20 Aug 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.