This page explains how Jun(Steven) Feng (USATT# 218762)'s rating went from 1933 to 1883 at the PTTC Saturday League event from 20 Nov 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.