This page explains how Oleksandr Denysenko (USATT# 217567)'s rating went from 1800 to 1809 at the Spttc Wednesday night league event from 11 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.