This page explains how Marc Villanueva (USATT# 28463)'s rating went from 1847 to 1847 at the Chicago Land Area Singles League event from 7 May 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.