This page explains how Daniel R. Seemiller (USATT# 9870)'s rating went from 2487 to 2490 at the Dayton Butterfly Open held on - 14 Apr 2007. 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.