This page explains how Nathan A Crabtree (USATT# 95450)'s rating went from 1391 to 1364 at the 2016 Arizona Closed Tournament held on 30 Apr 2016 - 1 May 2016. 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.