This page explains how Ravid Nafisi (USATT# 266335)'s rating went from 894 to 854 at the 2021 June Open @ Princeton Pong held on 12 Jun 2021 - 13 Jun 2021. 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.