This page explains how Grace Wong (USATT# 212182)'s rating went from 1577 to 1574 at the NJTTC Thursday Adv League event from 25 Jan 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.