This page explains how Sean Sun (USATT# 280067)'s rating went from 54 to 51 at the GLTTC FRIDAY 730pm League event from 6 Oct 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.