This page explains how John B. Allen (USATT# 3836)'s rating went from 2136 to 2123 at the 27th Annual Bernard Hock Open held on - 14 Oct 2012. 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.