This page explains how Alex Kotlyar (USATT# 21222)'s rating went from 1721 to 1730 at the MCC Summer Open 2011 held on - 16 Jul 2011. 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.