This page explains how Huong (Evelyn) Nguyen (USATT# 219916)'s rating went from 1308 to 1252 at the Houston Elite League event from 14 Dec 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.