This page explains how Tak-Chee Chan (USATT# 219484)'s rating went from 1904 to 1925 at the Westchester August 2019 Open held on 24 Aug 2019 - 25 Aug 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.