This page explains how Rocky Cheung (USATT# 214707)'s rating went from 1395 to 1387 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.