This page explains how Kenny Tien (USATT# 30471)'s rating went from 2025 to 2015 at the 2007 Berkeley Open held on - 16 Sep 2007. 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.