This page explains how Andrei Zanko (USATT# 203165)'s rating went from 1647 to 1761 at the Westchester October 2020 Little Open held on 24 Oct 2020 - 25 Oct 2020. 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.