This page explains how Bruno A. Ferran (USATT# 70814)'s rating went from 1910 to 1857 at the 2008 NA Tour Finals Open held on - 14 Sep 2008. 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.