This page explains how W.E. Heinzelmann (USATT# 73449)'s rating went from n/a to 1294 at the Butterfly East Gate TT Open #1 held on - 13 Jan 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.