This page explains how Patrick Keville (USATT# 77971)'s rating went from 1223 to 1226 at the NJTTC Monday League event from 18 Jun 2012. 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.