This page explains how Preston Ha Trun Ha Nguyen (USATT# 29200)'s rating went from 2211 to 2219 at the 2023 USATT Pacific Regional Championships held on 19 May 2023 - 20 May 2023. 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.