This page explains how Nobuyuki Shiogai (USATT# 26208)'s rating went from 1850 to 1839 at the 2004 CO Civil War B (League) held on - 25 Apr 2004. 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.