This page explains how M. Genie Sachs (USATT# 16047)'s rating went from 721 to 721 at the Maryland Giant RR held on - 21 Aug 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.