This page explains how Arsen Gaysin (USATT# 90822)'s rating went from 1583 to 1566 at the South Shore Sports & Butterfly Open held on 28 Oct 2017 - 29 Oct 2017. 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.