This page explains how Justin Chen (USATT# 78261)'s rating went from 1742 to 1704 at the US Open held on 17 Dec 2019 - 21 Dec 2019. 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.