This page explains how Cliff Demartini (USATT# 22383)'s rating went from 854 to 874 at the 2014 Spin Magicians Open held on - 30 Aug 2014. 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.