This page explains how Reza Ahrabli (USATT# 3570)'s rating went from 1567 to 1521 at the Arkansas Closed held on - 3 Feb 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.