This page explains how Mark Chen (USATT# 1132008)'s rating went from 1212 to 1212 at the 2019 DFWTT Fall League event from 14 Sep 2019. 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.