This page explains how Frederick K. Kelsay (USATT# 23458)'s rating went from 1145 to 1118 at the Butterfly/Power Pong Open held on - 5 Oct 2003. 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.