This page explains how Dan Shao (USATT# 262864)'s rating went from 1957 to 1987 at the MDTTC September Open 2023 held on 30 Sep 2023 - 1 Oct 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.