This page explains how John Yoon (USATT# 12659)'s rating went from n/a to 1654 at the Chicago Ping Pong 2000 held on - 22 Sep 2000. 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.