This page explains how Jules Walzer-Goldfeld (USATT# 92891)'s rating went from 1638 to 1639 at the Westchester 2017 March Open held on 25 Mar 2017 - 26 Mar 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.