This page explains how David I. I. Rubin (USATT# 9611)'s rating went from 1974 to 1991 at the Biggest Little Open Tournament held on - 8 Jun 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.