This page explains how Alfred Lu (USATT# 268764)'s rating went from 1754 to 1821 at the Spttc Saturday Night League event from 28 May 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.