This page explains how William Collier (USATT# 22335)'s rating went from 1674 to 1670 at the Sports Fitness TT Players Seri held on - 5 May 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.