This page explains how Reginald Willis (USATT# 11921)'s rating went from 1725 to 1683 at the Baltimore Table Tennis League event from 15 Nov 2004. 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.