This page explains how Guido Schnabel (USATT# 73730)'s rating went from 1905 to 1872 at the 2008 Life Open held on - 22 Jun 2008. 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.