This page explains how Ian Seidenfeld (USATT# 80503)'s rating went from 96 to 95 at the 2011 MN State TT Championships held on - 6 Feb 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.