This page explains how Derek Torres (USATT# 220582)'s rating went from 2198 to 2187 at the 2022 Butterfly Puerto Rico Teams Open held on 8 Apr 2022 - 10 Apr 2022. 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.