This page explains how David T Campbell (USATT# 59573)'s rating went from 1272 to 1214 at the Club Joola Fall Open held on - 15 Sep 2013. 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.