This page explains how Jason Lacey (USATT# 9257)'s rating went from 1704 to 1575 at the Macy Block Giant RR Open held on - 30 Jan 2010. 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.