This page explains how Sumit Chawla (USATT# 266554)'s rating went from 929 to 928 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 6 Nov 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.