This page explains how William H. Durbin (USATT# 17486)'s rating went from 1233 to 1224 at the Mid FL Tour Cocoa Beach Fall O held on - 15 Oct 2011. 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.