This page explains how Sergey Averin (USATT# 18198)'s rating went from 1580 to 1560 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.