This page explains how Jorge Alejandro Vanegas Sanchez (USATT# 24999)'s rating went from 1886 to 1865 at the Schaumburg Summer Open held on - 27 Jul 2013. 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.