This page explains how Robert G. Hagerstrand (USATT# 59550)'s rating went from 1423 to 1381 at the Schaumburg RR Open held on - 28 Jun 1997. 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.