This page explains how Adar Alguetti (USATT# 83381)'s rating went from 2233 to 2198 at the 2013 Northern Open on JOOLA North America Tour held on - 28 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.