This page explains how Alexander Kuzmenko (USATT# 217219)'s rating went from 1413 to 1409 at the 2019 South Bay Spring / Summer event from 10 May 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.