This page explains how Gary D. Harbeck (USATT# 6425)'s rating went from 2100 to 2078 at the So. FL US Open Warm Up Tournam held on - 27 Jun 2004. 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.