This page explains how Roberto A. Byles (USATT# 4615)'s rating went from 1958 to 2063 at the BUTTERFLY APRIL 2019 BTTC OPEN held on 12 Apr 2019 - 14 Apr 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.