This page explains how Aleksandr Itunin (USATT# 77651)'s rating went from 1863 to 1854 at the Macy Block Winter Open held on - 6 Feb 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.