This page explains how Jens Gragen (USATT# 17026)'s rating went from 1487 to 1500 at the MDTTC October Open held on - 25 Oct 1998. 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.