This page explains how Emily Ye (USATT# 229921)'s rating went from 509 to 504 at the MDTTC Tuesday/Friday League event from 6 Nov 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.