This page explains how Steve Federico (USATT# 5724)'s rating went from 1975 to 1989 at the Butterfly/BCC May Open held on - 15 May 1999. 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.