This page explains how Joon Lee (USATT# 216874)'s rating went from 1161 to 1150 at the SpinBlock Monday Night League event from 8 Oct 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.