This page explains how James Scotty Todd (USATT# 4620)'s rating went from 1544 to 1542 at the California State Open held on - 29 Jun 2008. 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.