This page explains how Doug Brock (USATT# 18848)'s rating went from 1563 to 1531 at the Sports Fitness TT Players Seri held on - 2 Jun 2001. 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.