This page explains how Phil Dulin (USATT# 25729)'s rating went from 1591 to 1594 at the Middle Creek August Open held on - 15 Aug 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.