This page explains how Richard E Rowland (USATT# 70415)'s rating went from 1141 to 1166 at the Middle Creek June Open held on - 13 Jun 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.