This page explains how Gary M. Ruderman (USATT# 9615)'s rating went from 1917 to 1892 at the Bob Viducich Stiga Pacific Rim held on - 4 Nov 2007. 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.