This page explains how Edward Chen (USATT# 1176913)'s rating went from 1359 to 1223 at the 2023 September Open @ Princeton Pong held on 2 Sep 2023 - 3 Sep 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.