This page explains how Blake Cottrell (USATT# 87424)'s rating went from 1504 to 1462 at the Macy Block Open held on - 9 Sep 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.