Sean Koster
USATT#: 212045
1700 1666
TT&M Friday Night Butterfly League
30 Oct 2020
30 Oct 2020
This page explains how Sean Koster (USATT# 212045)'s rating went from 1700 to 1666 at the TT&M Friday Night Butterfly League event from 30 Oct 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.