This page explains how Ange Cedric Oba (USATT# 97683)'s rating went from 2415 to 2388 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.