This page explains how Jun(Steven) Feng (USATT# 218762)'s rating went from 1974 to 1949 at the PTTC Saturday League event from 6 May 2023. 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.