This page explains how Philip Crosbie (USATT# 21133)'s rating went from 1020 to 1008 at the TCTTA Fall Open Double RR held on - 25 Oct 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.