This page explains how Leadbeater Andrew (USATT# 91790)'s rating went from 2006 to 2007 at the 2015 BTTC Spring Open held on - 22 Mar 2015. 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.