This page explains how John Kwon (USATT# 97397)'s rating went from 1650 to 1647 at the Spttc Saturday Night League event from 8 Sep 2018. 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.