This page explains how Alfred Lu (USATT# 268764)'s rating went from 1821 to 1816 at the Spttc Saturday Night League event from 6 Aug 2022. 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.