This page explains how Sara Yeretnov (USATT# 271164)'s rating went from 137 to 126 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.