This page explains how Blair W. Wilson (USATT# 69613)'s rating went from 1570 to 1584 at the 2013 Butterfly Atlanta September Open held on - 7 Sep 2013. 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.