This page explains how Willy Leparulo (USATT# 13012)'s rating went from 1673 to 1672 at the Orlando Winter Open held on - 26 Jan 2003. 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.