This page explains how Craig Tafel (USATT# 15570)'s rating went from 1875 to 1824 at the Schaumburg RR Open held on - 29 Jan 2000. 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.