This page explains how B.N. Collie (USATT# 1966)'s rating went from 1100 to 1085 at the Greater Columbia Dec. Invitati held on - 10 Dec 1995. 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.