This page explains how Aniruddha Laud (USATT# 271415)'s rating went from 1121 to 647 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 4 Sep 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.