This page explains how John G Todd (USATT# 119)'s rating went from 1663 to 1687 at the Pensacola Spring Open held on - 10 Jun 2006. 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.