This page explains how Preston Ha Trun Ha Nguyen (USATT# 29200)'s rating went from 2129 to 2140 at the Power Pong May Open held on - 28 May 2005. 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.