This page explains how Valentin Izraelev (USATT# 28706)'s rating went from 838 to 827 at the Bloomington Competition and Elite League event from 21 Mar 2012. 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.