This page explains how Mark Neal (USATT# 73515)'s rating went from 1654 to 1669 at the March Open TT Team Championshi held on - 21 Mar 2009. 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.