This page explains how Sergey Kolosov (USATT# 211696)'s rating went from 2047 to 2039 at the Spttc Saturday Night League event from 16 Jun 2018. 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.