This page explains how Donald S. Varner (USATT# 62948)'s rating went from 1320 to 1321 at the Power Pong Open held on - 28 Oct 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.