This page explains how Valentin Izraelev (USATT# 28706)'s rating went from 878 to 855 at the Bloomington Competition and Elite League event from 9 Apr 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.