This page explains how Thomas G Migliaccio (USATT# 24076)'s rating went from 1859 to 1893 at the Butterfly 2018 August BTTC Open Tournament held on 11 Aug 2018 - 12 Aug 2018. 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.