Sean Koster
USATT#: 212045
1693 1640
TT&M Friday Night Butterfly League
2 Feb 2018
2 Feb 2018
This page explains how Sean Koster (USATT# 212045)'s rating went from 1693 to 1640 at the TT&M Friday Night Butterfly League event from 2 Feb 2018. 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.