This page explains how Jeffrey Von Kohorn (USATT# 76011)'s rating went from 1004 to 1115 at the QTTC January Open held on - 25 Jan 2009. 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.