This page explains how David A. Scarantino (USATT# 62535)'s rating went from 1687 to 1623 at the 77th Annual Michigan Closed held on - 1 May 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.