This page explains how CARLO SATIERRA (USATT# 256767)'s rating went from 1721 to 1705 at the ARKTTA 2019 December Open held on 7 Dec 2019 - 7 Dec 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.