This page explains how Ryan Davidsen (USATT# 1164172)'s rating went from n/a to 840 at the Westchester February 2019 Open held on 23 Feb 2019 - 24 Feb 2019. The links below take you to pages that describe various aspects of the ratings processor.

The ratings 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.