This page explains how Huong (Evelyn) Nguyen (USATT# 219916)'s rating went from 1573 to 1558 at the HITTA Weekly League event from 26 Mar 2022. 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.