This page explains how Richard A. Dewitt (USATT# 47261)'s rating went from 2234 to 2270 at the NE Pennsylvania Open TT Champi held on - 3 Nov 2007. 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.