This page explains how Ali Shafai (USATT# 52354)'s rating went from 1909 to 1856 at the Fairfield September Classic held on - 15 Sep 2001. 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.