This page explains how Nicholas Nash (USATT# 222829)'s rating went from 1580 to 1566 at the 2020 MDTTC February Open held on 8 Feb 2020 - 9 Feb 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.