This page explains how Collin B. B. Henslee (USATT# 30411)'s rating went from 1939 to 1897 at the 2017 Kansas City Fall Open held on 3 Nov 2017 - 5 Nov 2017. 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.