This page explains how Yiming Luo (USATT# 927355)'s rating went from 831 to 817 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 9 May 2017. 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.