This page explains how Dave Peradotto (USATT# 42747)'s rating went from 1983 to 1943 at the Davison March Open held on - 25 Mar 2000. 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.