This page explains how Eric Chang (USATT# 1173457)'s rating went from 1236 to 1209 at the GLTTC FRIDAY 730pm League event from 9 Jun 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.