This page explains how Huong (Evelyn) Nguyen (USATT# 219916)'s rating went from 1558 to 1545 at the HITTA Weekly League event from 2 Apr 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.