This page explains how Kim S. Brastow (USATT# 4415)'s rating went from 1681 to 1641 at the RITTA Giant RR held on - 18 Nov 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.