This page explains how Richard A. Dewitt (USATT# 47261)'s rating went from 2226 to 2232 at the Brooklyn TTC December Open held on - 27 Dec 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.