This page explains how Qiuyi Jia (USATT# 263263)'s rating went from 1672 to 1659 at the Spttc Saturday Night League event from 30 Sep 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.