This page explains how Felipe Alejandro Osorio (USATT# 84726)'s rating went from 1642 to 1643 at the Westchester 2016 March Open held on 19 Mar 2016 - 20 Mar 2016. 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.