This page explains how Alvin Chen (USATT# 89725)'s rating went from 1791 to 1791 at the Westchester 2017 August Open held on 26 Aug 2017 - 27 Aug 2017. 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.