This page explains how Robert K. Leatherwood (USATT# 7612)'s rating went from 1848 to 1841 at the 1998 Colorado Springs Open held on - 11 Oct 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.