Ray A. Robertson
USATT#: 63884
1415 1265
2020 Arizona Open and Giant Round Robin
22 Feb 2020 - 22 Feb 2020
22 Feb 2020 - 22 Feb 2020
This page explains how Ray A. Robertson (USATT# 63884)'s rating went from 1415 to 1265 at the 2020 Arizona Open and Giant Round Robin held on 22 Feb 2020 - 22 Feb 2020. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
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.