This page explains how Thomas Sawner (USATT# 71226)'s rating went from 1625 to 1624 at the MDTTC Butterfly October Open held on - 21 Oct 2007. 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.