This page explains how Henry Blankenship (USATT# 4284)'s rating went from 1804 to 1813 at the Huntsman World Senior Games held on - 6 Oct 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.