This page explains how J. D. D. Bradley (USATT# 24045)'s rating went from 1870 to 1861 at the MCC Summer Open 2011 held on - 16 Jul 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.