This page explains how Ricardo Brito (USATT# 80953)'s rating went from 1687 to 1603 at the LYTTC Friday Pro League event from 7 Apr 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.