This page explains how Randall Medcalf (USATT# 64482)'s rating went from 2086 to 1990 at the Houston Open held on - 2 Dec 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.