This page explains how Trung Nguyen (USATT# 198533)'s rating went from 1628 to 1624 at the BTTC League event from 1 Sep 2017. 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.