This page explains how Louis Radzeli (USATT# 42580)'s rating went from 1890 to 1854 at the 1997 Millcreek Open held on - 19 Oct 1997. 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.