This page explains how Gary Ng (USATT# 230156)'s rating went from 1223 to 1222 at the SpinBlock Monday Night League event from 9 Aug 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.