This page explains how Mukaila Rabiu (USATT# 219391)'s rating went from 2060 to 2039 at the LYTTC Giant RR September Open held on 19 Sep 2020 - 20 Sep 2020. 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.