This page explains how Robert G. Hagerstrand (USATT# 59550)'s rating went from 1264 to 1255 at the Schaumburg TT 12th Anniversary held on - 25 Apr 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.