This page explains how Crispin Chang (USATT# 550)'s rating went from 1656 to 1640 at the 2024 USATT Pacific Regional Championships held on 26 Apr 2024 - 28 Apr 2024. 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.