This page explains how Oleksandr Denysenko (USATT# 217567)'s rating went from 1802 to 1800 at the Spttc Wednesday night league event from 4 Sep 2019. 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.