This page explains how Ray A. Arditi (USATT# 56137)'s rating went from 1782 to 1812 at the Labor Day Open held on - 3 Sep 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.