This page explains how Arseni Mouchinski (USATT# 1150994)'s rating went from 919 to 915 at the LYTTC Friday Pro League event from 20 Jul 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.