This page explains how Ethan Yizhuo Su (USATT# 275965)'s rating went from 583 to 604 at the Swan Sunday League event from 21 May 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.