This page explains how Ariel Chen (USATT# 80345)'s rating went from 1375 to 1405 at the Westchester February 2019 Open held on 23 Feb 2019 - 24 Feb 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.