This page explains how Marvin Karno (USATT# 22332)'s rating went from 1198 to 1223 at the Butterfly Power Pong Open held on - 9 Dec 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.