This page explains how Zhongjie Yu (USATT# 271036)'s rating went from 1896 to 1821 at the Spttc Saturday Night League event from 15 Apr 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.