This page explains how Marcelo Alava (USATT# 93312)'s rating went from 1844 to 1874 at the Westchester 2015 February Open held on - 22 Feb 2015. 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.