This page explains how Matthew Ioffe (USATT# 94630)'s rating went from 807 to 804 at the NYITTC June 2015 Open held on - 21 Jun 2015. 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.