This page explains how Gideon Teitel (USATT# 75508)'s rating went from 578 to 588 at the Club JOOLA Rockville Summer Open held on - 25 Jul 2010. 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.