This page explains how Gregory Haardt (USATT# 268692)'s rating went from 1524 to 1520 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 28 Mar 2023. 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.