This page explains how Tony Luong (USATT# 264821)'s rating went from 1293 to 1291 at the SpinBlock Monday Night League event from 1 Nov 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.