This page explains how Brian Chia (USATT# 30737)'s rating went from 2177 to 2181 at the 2021 Washington State Rating Events held on 24 Apr 2021 - 25 Apr 2021. 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.