This page explains how Ian Seidenfeld (USATT# 80503)'s rating went from 1047 to 1089 at the Bloomington Competition and Elite League event from 2 Oct 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.