This page explains how Kenneth K. Yoon (USATT# 49699)'s rating went from 1409 to 1379 at the NYTTF June Open held on - 15 Jun 2008. 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.