Sean Koster
USATT#: 212045
1734 1730
2021 Arizona Open & Giant Round Robin
25 Sep 2021 - 26 Sep 2021
25 Sep 2021 - 26 Sep 2021
This page explains how Sean Koster (USATT# 212045)'s rating went from 1734 to 1730 at the 2021 Arizona Open & Giant Round Robin held on 25 Sep 2021 - 26 Sep 2021. 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.