This page explains how Alex Kotlyar (USATT# 21222)'s rating went from 1615 to 1552 at the 2008 Indiana Open held on - 7 Sep 2008. 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.