This page explains how Harry Gao (USATT# 74834)'s rating went from n/a to 1580 at the 2007 Summer Broward TT Open held on - 5 Aug 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.