This page explains how Collin B. B. Henslee (USATT# 30411)'s rating went from 1844 to 1939 at the 2017 Hawkeye Open held on 19 Aug 2017 - 20 Aug 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.