This page explains how Robert Cullen (USATT# 1163881)'s rating went from 1258 to 1209 at the Northshore Table Tennis 2023 Summer Open held on 24 Jun 2023 - 24 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.