This page explains how Gary Ng (USATT# 230156)'s rating went from 1266 to 1258 at the 56th RoboPong St. Joseph Valley Open held on 28 May 2021 - 30 May 2021. 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.