This page explains how Thi Nguyen-Phuoc (USATT# 270264)'s rating went from 805 to 800 at the ICC - Sunday Beginners League event from 5 Jun 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.