This page explains how Gene Hal Szeto (USATT# 50626)'s rating went from 2012 to 1984 at the Primo's Farewell Open held on - 2 Apr 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.