This page explains how Tim Mcgrane (USATT# 79186)'s rating went from 1820 to 1766 at the 2013 Badger Open held on - 22 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.