This page explains how Chiupong Huang (USATT# 88109)'s rating went from 1809 to 1805 at the LYTTC Friday Pro League event from 18 May 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.