This page explains how Nicholas Allen (USATT# 223309)'s rating went from n/a to 818 at the Pittsburgh Steel City Open held on 19 May 2018 - 19 May 2018. 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.