This page explains how Jim Stedeford (USATT# 24726)'s rating went from 1272 to 1210 at the Pittsburgh Steel City Open held on - 2 May 2015. 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.