This page explains how Yonatan Morse-Achtenberg (USATT# 280046)'s rating went from 1049 to 1019 at the MDTTC November Open 2023 held on 18 Nov 2023 - 19 Nov 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.