This page explains how Royston Dsouza (USATT# 218904)'s rating went from 1780 to 1879 at the 2019 Arizona Open & Giant Round Robin held on 2 Mar 2019 - 3 Mar 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.