This page explains how Igor Tsalyuk (USATT# 74676)'s rating went from n/a to 1230 at the Aurora's Eleven held on - 24 Jun 2007. 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.