This page explains how Ken Girton (USATT# 6111)'s rating went from 1460 to 1415 at the 2011 Spring Open II. held on - 21 May 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.