This page explains how Luis Sujo (USATT# 79007)'s rating went from 2122 to 2117 at the Butterfly April 2018 BTTC Open held on 14 Apr 2018 - 15 Apr 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.