This page explains how Ron Leung (USATT# 90673)'s rating went from 1821 to 1791 at the Motor City Fall 2023 Open held on 6 Oct 2023 - 7 Oct 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.