This page explains how Igor Shulkin (USATT# 18534)'s rating went from 2276 to 2256 at the LYTTC Friday Pro League event from 28 Jun 2013. 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.