This page explains how Terry K. Brecheisen (USATT# 39903)'s rating went from 1291 to 1249 at the Harlings Upstairs event from 17 Apr 2013. 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.