This page explains how Arthur Hsieh (USATT# 271358)'s rating went from 1725 to 1720 at the Spttc Saturday Night League event from 2 Oct 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.